—Why is Maria so nervous? Because she doesn't know ________at the big party．
| A．to wear what | B．to wear how | C．what to wear | D．how to wear |
They are having _______ dinner at home.
| A．a | B．the | C．/ | D．an |
----How are you going, buddy?
----________. A little busy, though.
| A．Can’t be worse | B．By train | C．Not too bad | D．on my own |
Scientists from different countries are trying to_______ a good way to solve the energy problem.
| A．keep up with | B．come up with | C．catch up with | D．meet up with |
— Have you finished writing your book? — Yes. It _______ and _______ soon.
| A．is printing; is coming out | B．is being printed; will come out |
| C．is going to print, will be come out | D．is printed; has come out |
— Would your brother go for a picnic?. —If I don’t go, __________ .
| A．so does he | B．so will he | C．neither does he | D．neither will he |