—Who helped you clean the classroom yesterday?—_______. I did it all by myself.
—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.