— You should apologize to her, Barry.
—______, but it’s not going to be easy.
| A．I suppose so | B．I feel so | C．I do so | D．I like to |
--- Are you familiar with the music ?
--- Yes. There was a time _____ this kind of music was quite popular.
| A．when | B．that | C．with which | D．about which |
.He has got himself into a dangerous situation ____ he is likely to lose control over the plane.
| A．where | B．which | C．while | D．why |
The passenger was very impolite to the conductor, ____ , of course , made things even worse.
| A．who | B．whom | C．which | D．what |
_____ was known to all , Willian had broken his promise ______ he would give us a rise.
| A．As; which | B．As; that | C．It; that | D．It ; which |
John knocked at the door for nearly five minutes____his wife opened it.
| A．when | B．before | C．until | D．as |