- Over the past decades, sea ice in the Arctic as a result of global warming.A.had decreasedB.decreasedC.has been de...
- -----Did you watch the basketball match yesterday?-----Yes, I did. You know, my brother ________ in the match.A.is p...
- When he _______ the door, he found his keys were nowhere. A.would openB.openedC.had openedD.was to open
- —Did you see a man in black pass by just now?—No, sir. I ________ a newspaper.A.readB.was readingC.would readD. a...
- If you ________ Beijing Duck,I'd like to treat you to a meal at a famous duck restaurant.A.didn't tryB.don't tryC...
- I like these English songs and they ________many times on the radio.A.taughtB.have taughtC.are taughtD.have been ...
- So far this year we ______ a fall in house prices by between 5 and 10 percent.A.sawB.seeC.had seenD.have seen
- They said that they ______ a wonderful time in Beijing and they hoped to be there again.A.hadB.would haveC.would h...
- .--- Haven't I told you that I like the beef well done?---Yes, but I _____ it longer than I usually do.A.was cooking...
- —Have you known Dr. Jackson for a long time?—Yes, since she________ the Chinese Society.A.has joinedB.joinsC.had j...
- Although the causes of cancer_____, we do not yet have any practical way to prevent it.A.are being uncoveredB.have ...
- The wet weather will continue tomorrow when a cold front ______ to arrive.A.is expectedB.is expectingC.expectsD.w...
- The moment I got home, I found I_____my jacket on the playground.A.had leftB.leftC.have leftD.was leaving
- Though we don’t know what was discussed, yet we can feel the topic_____.A.had changedB.will changeC.was changedD....
- —I’ve got to go now.—Must you ?I ______you could stay for dinner with us.A.thinkB.thoughtC.have thoughtD.am thinking