91.The machine can only do _____man asks it to do .

　 A how　 B after　 C what　 D when

90.It’s a long time _____we met again .

　 A how　 B after　 C for　 D when

89.________the day went on ,the weather get worse .

　 A With　 B Since　 C While　 D As

88.It is three years_____ his father smoked .

　 A when　 B after　 C since　 D while

87.----Won’t you go shopping with your mother ?

　 ----____she promises to buy me a new sweater .

　　 A When　 B If　 C Unless　 D Whether

86.He thought the jar made of earth _____little value and let me have it ____only one dollar .

　　 A with; for　 B of; for　 C of ;by　 D with ; by

85.The lecture begins at 9 tomorrow morning .So I have to be at the hall ____8:40 pm. at the latest.

　　 A until　 B after　 C by　 D around

84. ______the sales of computers up by 20%every year ,our company is becoming larger .

A　 As　　 B　 For　 C　 With　 D　 Through

83. Which is the longest bridge ______the Changjiang River , do you know ?

A through　 B across　 C on　 D over

82.----It is _____impossible .

　 -----You mean it’s out of the question ,do you ?

A very　 B quite　 C fairly　 D rather