He gave us another piece of advice, ________ of great help to the research work.
| A．which I think is | B．which I think it is |
| C．I think which is | D．I think it is |
The hunter his gun against the tree and down for a rest.
| A．laid, lay | B．lay, laid | C．laid, lied | D．lied, lay |
These problems are different from each other, so they should be dealt with .
| A．totally | B．simply | C．separately | D．extremely |
－My teacher punished me this morning.
－Why? You’ve done nothing wrong, _________ I can see.
| A．as long as | B．as well as | C．as far as | D．as soon as |
It is our to enjoy mooncakes on Mid-Autumn night.
| A．habit | B．custom | C．hobby | D．rule |
---People should stop using private cars and start using public transport.
---. The roads are too crowded as it is.
| A．Go ahead | B．All right | C．Exactly | D．Fine |