Do you know ____ to our school？
Next term．（ ）
A．when the exchange students came
B．when did the exchange students come
C．when the exchange students will come
D．when will the exchange students come
Smoking is harmful to your /helθ/．
Do you know _______the new sports T﹣shirt？
Yes．Perhaps he asked his grandpa to do it，I think．（ ）
A．how he paid forB．Where he bought
C．when he paid forD．why he bought
May I ask a question after class，Mr．Li？
_________，but not during my lunch break．（ ）
A．SometimesB．AnytimeC．CertainlyD．Better not
Don't forget______ the rubbish out when you leave．（ ）
A．takingB．bringingC．to takeD．to bring
Why didn't you go to the speech yesterday afternoon，Tim？
I'm so sorry．But I ______ my homework．（ ）
A．have doneB．was doingC．will doD．am doing