—What did our science teacher say just now?
—He asked us ___________ more attention ___________ the lab clean.
A. to pay；to keep B. to pay；to keeping
C. pay；to keeping D. pay；to keep
—How long have you ___________ your OPPO R9?
—I bought it last Sunday.
A. buy B. bought C. have D. had
It was not ___________ 11 o’clock that I got away from the hospital.
A. before B. after C. till D. until
—Listen! Somebody is ___________ at the door.
—Don’t answer the door! Mom doesn’t let us do it while she is out.
A. standing B. knocking
C. sitting D. greeting
—Tom! I looked for you everywhere at the party last night.
—Oh， I ___________ to the party.
A. am invited B. was invited
C. am not invited D. wasn’t invited
I will never forget the old days ___________ I spent with my grandmother in the village.
A. which B. when C. who D. whom
