He, a Nobelist, made great ______________ to researching in this area.
A.encouragements | B.constitutions | C.breakthrough | D.contributions |
There as on why Igave in is____if I didn’t.
A.because she would be disappointed | B.that she would be disappointed |
C.because she would have a disappointment | D.for she would be disappointed |
.No matter how fast we worked,____.
A.we couldn’t catch up with them | B.and we couldn’t catch up with them |
C.so we couldn’t catch up with them | D.but we couldn’t catch up with them |
.The teache rfound ____ difficult to decide____ he would take with him to attend the
conference.
A.it;whom | B.himself;who | C.this;whom | D.that;who |
Living things are dying out quickly.Let’s ask____destroying the in the pastyears.
A.what part people have been playing | B.people have played in |
C.what part people have played in | D.people have been playing what part |
The man who was being followed stopped from time to time____he wanted to ti ehis
shoelaces.
A.as if | B.like | C.what | D.as |