. Tom hasn’t arrived yet. What can have ___________ to him?
| A．come about | B．taken place | C．broken out | D．happened |
How I envy you _______ your good luck!
| A．in | B．of | C．to | D．/ |
Tom: Would you like me to water your plants while you’re on your holiday?
Joe: ________
| A．No problem. I was more than glad to do it. |
| B．I appreciate it, but I’m already finished watering them. |
| C．Thanks for offering your help, but my brother’s going to do it. |
| D．Certainly watering plants is my favorite pastime. |
The old lady devoted her lifetime _______ the homeless children.
| A．to help | B．to helping | C．helping | D．for help |
The shop owner would _______ his money every day.
| A．count | B．count for | C．count out | D．counting |
I set _________ tomorrow on my journey to America.
| A．on | B．up | C．to | D．out |