I like English. ________ I am not good at it.
Alice was playing in the park while I __________my homework at home.
—Chris, could you help me __________my dog while I'm on holiday?—Sure. I'll take good care of it.
_________have a try again? I’m sure you can do it.
I think we all need to help animals live __________.
Everyone __________go through the security check(安检) when entering the Bird’s Nest stadium.