The wealth of the richest province is about 12 times of the poorest.
| A．one | B．than | C．as | D．that |
Since I bought the book two weeks ago, I ______ hardly ______ time to open it, just because of the research paper.
| A．have; had | B．did; have | C．have; any | D．had; any |
As is widely accepted, _______ students should have ______ easy access to labs, libraries and other facilities at school.
| A．/; an | B．the; an | C．the; / | D．/; / |
---Peter was killed in the earthquake!
---_____ I talked with him last week.
| A．What a pity! | B．I beg your pardon. | C．Sorry to hear that. | D．Is that so? |
It was along the Mississippi River ______ Mark Twain spent much of his childhood _____ the story happened.
A. which; thatB. that; whichC where; thatD. that ;that
---How long ______ in Shanghai?
--- For two weeks. I’m going to visit some schools in 
Shanghai.
| A．did you stay | B．are you staying | C．do you stay | D．have you stayed |