3.They have known each other_________they were children. A.for B.while C.Since 4.Since going by taxi is so expensive, I suggest _________ by bus to save money. A.to go B.go C.going 5.Do you know the lady _________ is standing over there? A.who B.whom C.which 6.He didn’t arrive __________ to take part in that conference. A.enough early B.early enough C.so early 7.She asked me what _________. A.is my name B.my name is C.my name was 8.The Parkers _________ in the garden when their friend came into the house. A.were working B.work C.worked 9.Islam is the country’s official ______________in Malaysia. A.region B.currency C.religion 10.Lan is very tired.________, she has to finish her work before going to bed. A.So B.However C.Although