说明选这个的原因
问题描述：
说明选这个的原因
____everything going well with you there?
A Has B Is C appeared
As soon as they enter the garden,they____by a smiling young lady.
A are greeted B were greeted C are greeting
He never goes home until he ____all his homework.
A finished B has finished C is finished
Our client had to wait while the boss was ____
A hanging up B hanging around C on the plane
答
1.B be doing 2.A 是一般现在时 出现by,则为被动态,be done 3.B 是一般现在时 所用A排除 不是他被完成作业,而是他已经完成作业,所以C也排除,只能选B 4.C A的意思是挂断,拖延,把...挂起来 B的意思是留在附近 C的意思...