Although the causes of cancer _____, we do not yet have any practical way to prevent it.
A.are being uncovered |
B.have been uncovering |
C.are uncovering |
D.have uncovered |
It is reported that two schools, _________are being built in my hometown, will open next year.
A.they both | B.which both | C.both of them | D.both of which |
He tried his best to solve the problem, _______difficult it was.
A.however | B.no matter | C.whatever | D.although |
—Which driver was to blame?
—Why, _______!It was the child’s fault, clear and simple. He suddenly came out.between two parked cars.
A.both | B.each | C.either | D.neither |
—What do you want to do next? We have half an hour until the basketball game.
—_______________. Whatever you want to do is fine with me.
A.It just depends | B.It’s up to you | C.All right | D.Glad to hear that |
I_______________ that all windows are shut. I did it.
A.make sure | B.am sure | C.make clear | D.am clear |