Mother kept inviting Mr．smith to dinner, and finally he _________．

gave in

gave up

gave out

gave off

It is the first time that I _________ the Great Wall．

visit

visited

have visited

had visited

I'd like to know _________ Chinese．

when he began to learn

when did he begin to learn

when did he begin learning

for how long he began to learn．

The policeman warned the drive _________ so carelessly．

never to drive

to never drive

to not drive

doesn’t drive

________, our ears are accustomed to sounds between 40 to 50 decibels．But in the settings like a KTV, the volume usually goes up to 80 to 90 decibels, which can cause damage to the ears．

Regularly

Fortunately

Frequently

Normally

Studying in a foreign country is becoming an increasingly popular ________ for many high school students．

chance

choice

access

approach

________ a man knows what is not to be done, will he succeed in doing what is to be done．

What if

If only

As if

Only if

In recent years, people have been ________ a great deal of importance to the holiday economy．

attaching

attracting

attacking

assigning

Not having enough food leads to poor health and, ________, sickness．

however

otherwise

therefore

instead

Thanks to the reform and opening policy started in 1978, China ________ remarkable economic development and social transformation in the past three decades．

has achieved

achieves

is achieved

achieved