There are ________ people in the supermarket. It’s socrowded.

What do you think of Zhang Qiang?—does he study hard in school,does he keep the school rules.

Someone called me up in the middle of the night, but they hung up _____ I could answer the phone[ ]

The continuous rain ______ the harvesting of the wheat crop by two weeks.

There must be something wrong with her eyes. She can’t see _______.