I am sure that he sneaked in her parents' room last night. --> He _____________ in his parents' room last night.
must have sneaked
I am certain that I didn't leave the door unlocked before going out. --> I _________ the door unlocked before going out.
can't/couldn't have left
Joe had stayed awake for the past 3 days, which is unadvised. --> Joe _______________ awake for the past 3 days.
shouldn't have stayed awake
_______ he is well-aware of his unrequited love, he never stops falling for her.
Though/ Even though/ Although/ In spite of the fact that/ Despite the fact that
It was raining cats and dog. ________, we decided to stay at home.
Therefore
Jack told his little sister off for not following his order. --> Jack _____________ his order.
would rather/sooner his little sister had followed
There has been an increase in the number of private vehicles. _________, the city is heavily polluted.
Consequently/ As a consequence/ As a result
Since he drank a lot, he cannot wake up early today. --> If _____________________ early today.
he hadn't drunk a lot, he could wake up
Get some snack. __________, you will have a stomachache.
Otherwise
The water is too cold for us to drink.(WARM) --> The water ____________________ for us to drink.
is not warm enough
It is possible that Kane was responsible for this entire mess. --> Kane ___________ for this entire mess.
may/might have been
Thanks to your help, I could finish the assignment. --> Had _________________, __________________ the assignment on time.
it not been for your help, I couldn't have finished
Ariana had brought an umbrella with her for fear of rain. However, it didn't rain at all. --> Ariana ____________ an umbrella with her.
needn't have brought
Jane regrets throwing a party last night. She could have had a more decent sleep. --> Jane ________________ last night.
would rather/sooner have slept than have thrown
People believe that Thomas Edison invented the first light bulb. --> The first light bulb _____________________ by Thomas Edison.
is believed to have been invented
Jordan was not old enough to attend the competition.(TOO) --> Jordan was ___________________ the competition.
too young to attend
_______ his incompetency, he applied for the job.
Despite/ In spite of
Nguyet would not have quit Chemistry if her teacher had been more dedicated. --> Nguyet _________________ more dedicated.
would rather/sooner her teacher had been
Han prefers sleeping to studying physics. --> Han _____________ physics.
would rather/sooner sleep than study
People assume that he committed the crime without any evidence. --> He ________________ without any evidence.
is assumed to have committed