You have to reorganize your article to make it _______.
A. understand B. represent C. make sense D. stand for
If you __ go, at least wait until the storm is over．
A．can B．may C．must D．will
It is human activities on the earth that are to _______ global warming.
A. be blamed for B. to blame for C. take charge of D. be responsible with
I like the house with a beautiful garden in front, but I can’t afford______．
A．one B．this C．it D．that
His glasses, _____he was like a blind man, were broken.
A. with which B. with it C. without which D. without it
Experiments of this kind in both the U．S．and Europe well before the Second World War．
A．have conducted B．have been conducted
C．had conducted D．had been conducted
