Be careful about the news on red fire ants— measures to prevent the possible spread of them.
A.take | B.to take | C.taken | D.taking |
It was not until the end of last year _____ the economy in our country began to develop rapidly.
A.when | B.that | C.which | D.in which |
---Anna, you look so tired and wet all over!
---Well, you know, all morning I _______ my books to my new office on the third floor.
A.am moving | B.have moved | C.had moved | D.have been moving |
---It was dangerous to throw that bottle out of the window. You could have hurt someone.
---I’m so sorry! I _______ .
A.am not thinking | B.wasn’t thinking | C.haven’t thought | D.don’t think |
Tsinghua University, ______ in 1911, is home to a great number of outstanding figures.
A.found | B.founding | C.founded | D.to be founded |
---May I take this book out of the reading room?
---No, you______. You read it in here.
A.mightn’t | B.won’t | C.needn’t | D.mustn’t |