Some very common things such as to the sun for a long time will do harm to people's skin and even cause skin cancer
A．exposing B．being exposed C．having exposed D．exposed
you may have , you should gather your courage to face the challenge .
A. However serious a problem B. Whatever serious a problem
C. However a serious problem D. No matter how a serious problem
Looking back on the three - year life in the mountain village, Thomas it as a milestone in his personal development
A．values B．confirms C．declares D．assumes
- - How dangerous it was!
- - Yes, but for the passer - by' s quick action, the girl _____
A．was drowned B．could have been drowned
C．had drowned D．should be drowned
－When will the expert come and give the lecture on economic development
－Not until our program ____by the government
A. approves B. is to approve
C. will be approved D. has been approved
The question that puzzled them is ____ they can get rid of the air pollution in the area.
A. how is it that B. that is how C. what is that D. how it is that
