Professor Johnson is said _____ some significant advance in his research in the past years.
A、havingmadeC
暂无解析
Modern（）perhaps causes more problems than it solves.
_____ time, he’ll make a first-class tennis player.
There are only ten apples left in the baskets, _____ the spoilt ones.
If you _____ in such a hurry,you _____ sugar into the sauce instead of salt.
Toobtainasatisfactoryresult，onemustapplytwo（）ofpaintonacleansurface.
