Directions: Choose the best answer from the four choices marked A, B, C and D.1.I will hold your note until Christmas Day, _______ you certainly will have received your allowance.A. by that timeB. at that timeC. by which timeD. at which time2.The Prime Minister commanded that farmers ________ loans from the government.A. would receiveB. receivedC. ought to receiveD. should receive3.They packed the instruments carefully ____ they would be broken during transportation.A. so thatB. on condition thatC. for fear thatD. provided that4.Lots of people pretend that they never read advertisements, but this claim ________.A. may be hardly doubtedB. may be seriously doubtedC. may be hard doubtingD. may be doubted serious5.______ hostels (客栈) may not offer the most comfortable quarters, they are convenient, inexpensive, and attractive to traveling students and young people.A. WhenB. WhileC. Now thatD. If6.When he hurried to the airport, he found, to his great disappointment, his ticket and passport ________ at home.A. were leftB. had leftC. have been leftD. had been left7.Were the wire of a smaller diameter (直径), its resistance ________.A. had been increasedB. was increasedC. might have been increasedD. would be increased8.He went to work on foot yesterday, though he ________ by bus.A. must have goneB. might have goneC. would have goneD. could have gone9.He always prefers to start early rather than ________ everything to the last minute.A. leaveB. leavingC. leavesD. left10. Frank was advised to give the assignment to ________ he believed had a strong sense of responsibility.A. whomB. whoeverC. whomeverD. that11. Almost all the countries in the world hoped that the warring sides would ________ a compromise.A. affect...