The Mekong River Commission has found no evidence ______ the dams on the upper reaches have an influence on the water flow downstream．
| A．which | B．that | C．where | D．what |
I iust don't understandthat leads to so many teenagers becoming addicted to playing computer games·
A．why it does B．what it does C．what it is D·why it is。
We’ll buy a11 the products in your storehouse，of course the price is reasonabte．
A．provided B．unless C．though D·until
Usain Bolt，best runner，ranfastest in last race in the 2008 Olympic Games．
A．／；／；the B．the；／；／ C．the；／；the D·the；the；／
It was getting dark. I found a car _____ in a pool by the side of the road.
| A．to be stuck | B．stuck | C．sticking | D．stick |
It’ll do harm to you to lie in bed _____.
| A．read | B．and reading | C．to read | D．reading |