yestoday evening they were having their supper a guest came to visit them suddenly

分类: 作业答案 • 2021-12-28 15:25:57

问题描述：

yestoday evening they were having their supper a guest came to visit them suddenly
A.as B.while C.when Duntil

答

Yesterday evening they were having their supper (C.when) a guest came to visit them suddenly.