You should look over this document carefully before(sign)________it.

admin2021-03-16 57

问题 You should look over this document carefully before(sign)________it.

选项

答案signing

解析 before为介词,且sign和you是主动关系,所以用-ing形式。故填signing。

转载请注明原文地址:https://kaotiyun.com/show/mc4K777K

大学英语三级A级

相关试题推荐

随机试题

最新回复(0)