---- I am going to Hainan for my holiday.
---- OK. Have fun ________ you can. The hard times are approaching.
A.until B.before C.unless D.while
Professor Smith, for ________ work matters most, is devoted to his research work.
A.whose B.him C.whom D.what
The shopkeeper wanted to sell me the dress for 30 dollars, and I wanted to pay 20 dollars for it, so we ________ on 25 dollars.
A.communicated B.compromised C.bargained D.concentrated
Due to the present school shootings, the only way the president could imagine ________ such tragedies was to ban guns across the US.
A.to prevent B.preventing C.prevented D.having prevented
My computer ________ start this morning. There must have been something wrong with it.
A.wouldn’t B.shouldn’t C.couldn’t D.mustn’t
---- I am leaving for America to attend a trade fair tomorrow.
---- ________. See you in a couple of weeks.
A.Congratulations B.All the best C.All the better D.All in all
