____ and shy, the boy thrust the flowers at his girl friend.
| A．Embarrassing | B．Embarrassed |
| C．Being embarrassed | D．To embarrass |
单项选择（每题1分）
We must think twice _____ we make the final decision.
| A．when | B．while | C．until | D．before |
单项选择（每题1分）
The stones each _____ as much as two tons.
| A．weighs | B．are weighed | C．weigh | D．is weighed |
单项选择（每题1分）
Is this the reason _____ she explained in the report for her success in the job?
| A．what | B．that | C．how | D．why |
单项选择（每题1分）
—Look, John’s fallen asleep at work!
—Oh, he must have _____ late last night.
| A．waken up | B．put up | C．taken up | D．stayed up |
单项选择（每题1分）
In his letter was his promise _____ he would spend the Christmas Eve with me.
| A．that | B．what | C．which | D．whether |