A big party was held in NO.18 Middle School last night, the teacher with students _____ singing and dancing happily at the party.

They argued _________ each other ________ the math problem yesterday.

We didn’t go out because it ________ heavily last night.

Would you please drive______? My plane is taking off.—-I’d like to, but safety comes first.

Do you know(认识) that girl?—Yes. _____ name is Mary.