We study five days_____ week and on Sundays we often play ____football.A. a;the B. 不填;a C. a;不填
Can you help me ________ up the waste things?
Susan tries ________ English. But she often forgets ________her English book.
You hardly know him, ________ ?
There is ________with the recorder.
________did you surf the Internet this week? Three times.