Use the imperative or the present simple tense to fill in the gap. Lab technicians ............................ (wear) proper PPE when handling acids and chemicals.
wear
Oops!
Check
Okay!
Check
baam
Lose 20 points!
Oops!
magnet
Take 25 points!
Okay!
shark
Other team loses 10 points!
Okay!
baam
Lose 25 points!
Oops!
15
Use the imperative or the present simple tense to fill in the gap. She always ............................ (wash) her hands before and after an experiment.
washes
Oops!
Check
Okay!
Check
lifesaver
Give 25 points!
Oops!
star
Double points!
Okay!
shark
Other team loses 5 points!
Okay!
banana
Go to last place!
Oops!
15
Use the imperative or the present simple tense to fill in the gap. Chroline ................................ (cause) burns and eye damage.
causes
Oops!
Check
Okay!
Check
15
Use the imperative or the present simple tense to fill in the gap. "............... (use) a volumetric flask to measure precise volumes of liquid materials in lab experiments."
Use
Oops!
Check
Okay!
Check
thief
Give points!
5
10
15
20
25
gift
Win 10 points!
Okay!
shark
Other team loses 10 points!
Okay!
banana
Go to last place!
Oops!
15
What is the imperative?
Don't wear flip flops. / Wear closed toe shoes.
Oops!
Check
Okay!
Check
15
Use the imperative or the present simple tense to fill in the gap. We ................................ (store) test tubes in the rack to avoid spillage.
store
Oops!
Check
Okay!
Check
15
What is the imperative?
Wear lab coats, safety glasses and closed shoes in the lab.
Oops!
Check
Okay!
Check
15
Complete the sentence with an imperative or a present simple form. ........................................ (not touch) hazardous substances.