He usually goes to school ________ his bike, but sometimes he ________ a taxi to school.

Before the storm,fishes in the pond usually________themselves out of the water to get fresh air. [ ]

didn’t she ask for help at thattime— You know, at such a midnight, there was no one ________.

What do we need to buy－________.

I _____ Ping –pong quite well, but I haven’t had time to play since the new year