问题

wo sons ______ in Afghanistan, John and SusieMayes are working extra hard this year to make sure their grandchildren have agreat Christmas.

A:to serve
B:serving
C:having served
D:served

正确答案是：

同类题型

一 What do you think of French? 一 In my opinion, French is _____English. [ ]

You look very tired. You ____ late last night.

In our school, students are accordingto how much they know and how old they are. A．classified B．combined C．listed D．made

Dad, must we wait until the light becomes green—Yes,I’m afraid we .That’s the traffic rule.

We can use QQ to talk with each other online.— Really Could you please show me _______ it