Maybe you left your keys in the kitchen. (MIGHT) You ....................... your keys in the kitchen.

They must think of a better plan than that. (COME) They'll have ................... a better plan than that.

I read the instructions twice because I wanted to be certain that I understood them. (MAKE) I ............ that I understood the instructions, so I read them twice.

The boy says he doesn't know anything about the missing money. (CLAIMS) The boy ................... anything about the missing money.

Answering this email is not necessary. (NEED) You ............... this email.

It is possible that Maria didn't get your message. (MAY) Maria ....................... your message.

He called the police last night. (CALL) He ................. to the police last night.

Someone is cleaning up our garden next week. (CLEANED) We ............... up next week.

Wearing a helmet is compulsory when you go roller skating. (HAVE) You ..................... a helmet when you go roller skating.

We must leave early tomorrow morning, because the weather will get bad later on. (OUT) We need ..................... early tomorrow morning, because the weather will get bad later on.

I'm not going home in the rain. (UNTIL) I won't go home ................ raining.

People think that church is over a century old. (THOUGHT) That church ...................... over a century old.