---Andy, you were the only person that was late for the meeting, why? ---Sorry, sir. But I really had a __________ time finding the meeting hall.
—Many students don’t know how to _______ stress and become worried. —I think they’d better talk to their teachers or parents.
The little boy had little food because of feeling sick this morning, ________?
—How long have you _______ the iPad? —Only two days. I will return it to Jack this afternoon.
This August, China will celebrate _______ anniversary (周年纪念日) of the victory of the Anti-Japanese War.
To make our environment ________ polluted, everyone needs to take more action.