Question

_____ your help, we _____ complete the work in time.

A．Thanks to; were able to	B．Thanks to; could
C．As; would	D．Because; had to

Answer 1

A

thanks to相当于because of,此短语可放在句首或句尾，to是介词，后接名词、代词或动名词，而as或because后接的是从句，因此排除C、D，其次，当表示过去有能力并实际上成功地做到某事，要用“was/were able to”不用could，没有做到可用couldn’t或wasn’t/weren’t able to.