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 |
Mr. Chang has been ___ monitor of the class.
| A．elected to | B．elected | C．choose | D．chosen to |
The time __Mathilde had to go back home finally arrived.
| A．which | B．when | C．that | D．for which |
--Let’s play basketball for a while, shall we?---No, I don’t want to
--How about ___? --Oh, that is fine.
| A．go for a walk | B．going for a walk | C．to go for a walk | D．be going for a walk |
Jim took my book by mistake.He ought ___ the yellow one.
| A．to take | B．to have taken | C．take | D．have taken |
Jeanne said; “My friend, Mathilde, __ very hard during those years.”
| A．had worked | B．use to work | C．used to working | D．used to work |