We hope to go to the beach tomorrow, but we won’t go ____ it’s raining.
A.if | B.when | C.though | D.because |
Years ago we didn’t know this , but recent science______that people who don’t sleep well soon get ill.
A.showed | B.has shown | C.will show | D.is showing |
.It is said that the early European playing-cards ______for entertainment and education.
A.were being designed | B.have designed | C.have been designed | D.were designed |
31.The company had about 20 notebook computers but only one third _______used regularly . Now we have 60 working all day long.
A.is | B.are | C.was | D.were |
The young girl sitting next to me on the plane was very nervous.She ______before.
A.hasn’t flown | B.didn’t fly | C.hadn’t flown | D.wasn’t flying |
. –Is there anything wrong , Bob ? You look sad .
--Oh, nothing much. In fact ,I _____of my friends back home .
A.have just thought | B.was just thinking | C.would just think | D.will just be thingking |