In our class, when the bell rang and the teacher closed his book, it was a ______ for everyone to stand up.
A.signal | B.chance | C.mark | D.measure |
---- May I smoke here?
---- If you, choose a seat in the smoking section
A.should | B.could | C.must | D.may |
There are lots of problems in your hometown, but we're happy to see many of them________.
A.are solving | B.are solved |
C.have solved | D.are being solved |
Everyone is different and that is ________ makes our world so much better.
A.that | B.which | C.what | D.who |
The rich shouldn't ________their wealth. Instead, they should contribute more money to the poor.
A.show off | B.take off | C.put off | D.give off |
Try to be independent, for your parents can't do __________for you all your life.
A.something | B.nothing | C.everything | D.anything |