问题

How can you keep slim as a mother of two sons?—I _______ in the gym for years

A:have worked out
B:have been working out
C:have worked on
D:have been working on

正确答案是：

同类题型

We are going to begin our meeting at 8：00.Please be here_______.Don’t be late.

Vienna,the capital of Austria,isthe River Danube and The Blue Danube is Strauss.

Why didn’t Mr. Smith arrive on time for the meeting?— He must have been ________ on his way here in the traffic jam.

Hospital staff burst into cheers after doctors completed a 20-hour operation to have _______one-year-old twins at the head.

Who would you like to see at the moment–The man ____Mr.White .