Thebuswasheldupbythesnowstorm，causingthedelay．（）A.asB.howeverC.thusD.and

Question

The bus was held up by the snowstorm，____causing the delay．（　　）

A. as

B. however

C. thus

D. and

Answer 1

答案：C 句意表达的是承接；as因为，however然而，thus因此，and和；句中有逗号分隔，且后接现在分词，要用表示承接关系的副词．故选C