—Did you stay at home________last night?
—Yes. My sister went to see fireworks with my parents.
A.in fact B.on duty C.by yourself
—Why are there so many plants in your flat?
—I want them to________harmful gases because I just bought some new furniture.
A.take over B.take in C.take up
—Where is David?
—He’s doing a(n) ________in the lab. He wants to find out why the chemicals can burn in sunny days.
A.experiment B.preparation C.creation
If you_________a person, you want him or her to have courage to do something.
A.invite B.encourage C.force
— Everyone has________the important parts on the blackboard. Why didn’t you do that?
—I’ve memorized them in my mind, Mr Green.
A.copied down B.taken up C.put off
We all went swimming______________ Tom，because he was ill at home.
A.with B.besides C.except
