—Will you give me a hand? I have some trouble_______ the scientific problem.
—Don't worry. I'll try my best to help you _______.
| A．solving; in five minutes | B．to solve; in five-minute |
| C．to solve; after five minutes | D．solving; after five-minutes |
The director wants to make sure no one will solve the mystery until it ________ at the end of the horror film.
| A．is explained | B．will be explained | C．explains | D．has explained |
There are large numbers of school buses ________designed for primary schools in Taizhou.
| A．especially | B．specially | C．probably | D．particularly |
—________I complete so much my homework now?
— No, you ________.You can do it after supper.
| A．May; ought not to | B．Should; can’t |
| C．Can; mustn’t | D．Must; needn’t |
— Which do you prefer, coke or juice? —________ is OK. But water will be better if possible.
| A．Both | B．Either | C．None | D．Neither |
It’s ________ unusual chance for Mr White to get such ________ useful advice.
| A．an; / | B．a; an | C．a; the | D．an; an |