Love your parents they are alive. Don't wait until it is too late.（ ）
| A． |
while |
B． |
after |
C． |
until |
D． |
unless |
Usually, it’s easier to make decision than to take action.
| A．a; an | B．／; an |
| C．／;／ | D．a;／ |
My parents want me to get further study to be _____ an engineer ____ a scientist,
____ I would like to be a famous surgeon doctor.
| A．neither; nor; and | B．either; or; but |
| C．not only; but; so | D．both; and; or |
The railway Qinghai to Tibet is the longest plateau (高原) railway in the world.
| A．connected | B．connects |
| C．connecting | D．is connected |
I find ____ useful _____ English well.
| A．that; to learn | B．That ; learn |
| C．it; to learn | D．it;learn |
．We may meet all kinds of difficulties in the future, but we should be confident enough to --- any challenge.
| A．put on | B．get on |
| C．take on | D．try on |