We were badly treated in the hospital.
Don’t worry.The president has promised to ______ your complaint at once.
| A．look up | B．look into | C．look back on | D．look forward to |
The first decade of the 21st century _____ the breathtaking and non-stop development of China．
| A．witnesses | B．witnessed | C．will witness | D．had witnessed |
---I had practiced my spoken English, but still failed in the oral test．
---Don’t be discouraged．_____ and you will surely pass it．
| A．Make a bit more effort | B．To make a bit more |
| C．Making a bit more effort | D．If you make a bit more effort |
A strange girl entered the room and told me a story of her own, _____ I suspected the truth．
| A．that | B．which | C．of which | D．at which |
Just imagine performing such an opera as Turandot in the Forbidden City---there _____ be a better setting!
| A．mustn’t | B．shouldn’t | C．couldn’t | D．needn’t |
--- I can’t go for a picnic with you because something urgent has _____．
---What a shame!
| A．come up | B．cleared up | C．stayed up | D．ended up |