—Why are you so excited?
—Lucy invited me ______ to her birthday party.
| A．to go | B．go | C．going | D．went |
The dictionary mustn’t ________ from the library.
| A．take away |
| B．taken away |
| C．are taken away |
| D．be taken away |
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 |