问题补充:
单选题_____yourhelp,we_____completetheworkintime.A.Thanks to; were able toB.Thanks to; couldC.As; wouldD.Because; had to
答案:
A解析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.