Tom didn’t go hiking with his classmates his illness. A. becauseB. because ofC. as D. sin

问题补充：

Tom didn’t go hiking with his classmates his illness.

A. because

B. because of

C. as

D. since

答案：

A. because

(答案→)B. because of

C. as

D. since

解析：句意：由于汤姆生病了，他没有与他的同学们去远足旅行。分析句子后接短语，因此用because of,而because后接从句。故选B