78.( ) Wuhan Changjiang Bridge is 1670 metres long.A 130-metre train will go across it with the speed(速度)of 24 kilometres every hour, How many seconds will it take the train to cross the bridge?_____
A.200 B. 250 C. 270 D. 300
77.( ) Look at the number,1/3,1/2,5/9,7/12,3/5…,The next number is______
A. 7/15 B. 11/18 C. 3/7 D. 9/11
76.( ) The duck _____on the ground quietly and then ____an egg.
A. laid, lay B. lay, laid C. laids, lays D. lays, laids
75.( ) There is a bird____ ____the tree.
A. to sing, on B. singing, on C. singing, in D. to sing, in
74.( ) I don’t know when the teacher ____, when he ____,I’ll tell you.
A. goes, goes B. will be back, will be back
C. comes, will come D. will come, comes
73.( ) -Are there any apples in the box?
-Yes, there _____some.
A. maybe B. can be C. may have D. may be
72.( ) Mr Brown, a writer, ______playing golf.
A. likes B. like C. is liking D. are liking
71.( ) Tom didn’t do _____housework.
A. a little B. a bit C. a bit of D. A and C
70.( ) Tom with his two brothers ____in the countryside and cut down some trees.
A. is B. are C. was D. were
69.( ) Li Lei never put his heart into the lesson,______?
A. doesn’t he B. does he C. didn’t he D. did he