I want to return the book to Jack, but I can’t find him.
He the library . you can find him there.
A has been to B has gone to C has left D went to
You will not succeed ______ you work harder.
| A．if | B．when | C．unless | D．because. |
--Tom,be careful not to drive to fast._________ .
--Thank you for your advice.
| A．It’s better to be safe than sorry. |
| B．Too many cooks spoil the broth. |
| C．Many hands make light work. |
| D．Every dog has its day. |
We must do everything we can _________ our earth clearer and safer.
| A．made | B．to making | C．make | D．to make |
We all know that paper burns in _________ .
| A．CO2 | B．N2 | C． O2 | D．CO |
This is one of the best films _________ this year.
| A．have been shown |
| B．that have shown |
| C．that have been shown |
| D．which has been shown |