—Can you help me with my math lesson this afternoon? —I’m sorry, I have so

题型：浙江省期末题难度：来源：

—Can you help me with my math lesson this afternoon?
—I’m sorry,    I have something important to do.[     ]
A.because
B.and
C.but
D.because of

答案

举一反三

Tiandi Cinema is not the best one in Xiamen, _____ I think it"s the cheapest.[ ]
A. but
B. or
C. so

题型：福建省期中题难度：| 查看答案

Many boys are good at math ______they aren"t good at English.[ ]
A. and
B. or
C. but
D. so

题型：山东省期中题难度：| 查看答案

Newton was playing under an apple tree _________ an apple fell onto his head.[ ]
A. when
B. while
C. after
D. before

题型：同步题难度：| 查看答案

We have to get up at 7:15 to morrow morning,_____ we will be late for the 7:40 train.   [     ]
A. before
B. or
C.if
D. so

题型：同步题难度：| 查看答案

Call a taxi, _____ you will miss the train. [ ]
A. and
B. though
C. because
D. or

题型：同步题难度：| 查看答案