He met many problems ______ he was going over his lessons.
| A．before | B．as soon as | C．since | D．while |
--May I swim in the lake, mum? --No, you_______. Look! Here is a notice “No Swimming!”
| A．mightn’t | B．mustn’t |
| C．needn’t | D．may not |
Mary felt happy to receive some gifts on ______ birthday.
| A．twelve | B．twelfth | C．the twelfth | D．next |
I ____ the school bus this morning. Luckily, Tony’s father give me a ride.
| A．took | B．caught | C．missed | D．saw |
It is believed that ____ December 21st, 1891, the first basketball game in history was played.
| A．in | B．at | C．by | D．on |
Our teachers gave us some ______ on how to study well.
| A．advice | B．question |
| C．suggestion | D．problem |