Rock climbing can be_________,so I suggest you go to bed early tonight.
| A．tire |
| B．tired |
| C．tiring |
| D．to tired |
Tom, it’s good for you to search the Internet for some information ____ Shanghai before your trip there.
A. in B. for C. of D on
--- Hi, Lucy, have you seen the newspaper on the table?
--- Oh, yes. I ____ it but I can’t remember where I put it.
| A．read | B．would read | C．am reading | D．had read |
____ directly to the sun in summer will do great harm to our skin.
| A．Be exposed | B．Being exposed | C．Exposing | D．Exposed |
It rained heavily overnight and not until this morning____.
| A．did it stop | B．had it stopped | C．stopped | D．it stopped |
--Do you know what caused the accident? --- No, not yet. The matter _____.
| A．is being looked into | B．was being looked into | C．looked into | D．is looked into |