[单项选择]You will have to practice ______ times before you can do it.
A. many more
B. more often
C. more many
D. more several

[单项选择]You will have to practice ______ times before you can do it.
A. many more
B. more often
C. more many
D. more several

[单项选择]Be sure ______ your hands before you have meals.


A. to wash
B. wash
C. washing

[单项选择]Make sure that you have enough facts before you accuse him.
A. 在你控诉他之前要有足够的事实。
B. 在你控诉他之前要确信你有足够的事实。
C. 在这之前你有足够的事实控诉他。
D. 你要确信你有足够的事实才能控诉他。

[单项选择]

You really have to get very old before you realize you’re old. I’m in my middle fifties and I don’t feel old yet. However, sometimes I look back at my childhood and (21) things to the way life is for (22) kids. Some things have certainly changed.
One area of change is television. Some changes have been improvements. Some changes, on the other hand, have been (23) .
When I started school, most people didn’t have a television; TV was just beginning to get (24) . My father decided to go all out and buy a 16 inch black and white Motorola set, I still remember watching the Lone Ranger save people from the (25) guys on that awesome electronic machine. That was exciting!
Now, (26) have larger pictures in full color. The pictures are clearer and the sound is much more realistic. The new high definition sets are made to rival (27) screens.
The variety and quantity of programming hasA. movies
B. video
C. watch
D. telephone

[单项选择]-- You should have thanked her before you left. -- I meant _____, but when I was leaving I couldn`t find her anywhere.
A. to do
B. to
C. doing
D. doing so

[单项选择]Before you can fly a plane in the sky you have to learn the ______ of flying it.
A. skill
B. technology
C. knowledge
D. ability

[单项选择]Before you carry out a survey, you should have a careful planning.
A. career
B. search
C. plan
D. research