Children are having a good time in the park.
| A．have fun | B．enjoy themselves | C．having fun | D．playing games |
When you move somewhere new, the first thing for you is to find a place______.
| A．to live | B．living in |
| C．to live in | D．of live |
---I have trouble _____ my new computer.
-----Don’t worry. I’ll show you how ____it.
| A．using, using | B．to use, to use |
| C．using, to use | D．to use, using |
The math problem is so hard, I really don’t know _____.
| A．how to do it | B．how to do |
| C．what to do it | D．when to do |
--- Shall we call a taxi?
---- Ok, Let me ______ the phone number in Yellow Pages.
| A．look at | B．look for |
| C．look up | D．look after |
_____ there may be sharks near the beach, people still swim there.
| A．Since | B．But | C．As | D．Although |