It doesn't make any____now what he says -- it's too late for apologies.
| A．difference | B．effect | C．progress | D．development |
It was not until the early 1950s ______most tape recorders began using plastic tape as they do today.
| A．when | B．which | C．that | D．Before |
There is an old saying _______ goes “Give a man a fish, and you feed him for a day. Teach a man to fish, and he can feed his belly the whole life”.
| A．that | B．who | C．when | D．As |
______ you study hard, you will pass the exam.
| A．If | B．Although | C．Though | D．Before |
His car ______ yesterday, so he can not go to work by car.
| A．is repaired | B．was repaired | C．repairs | D．has repaired |
The little boy has never been to Beijing, ________he ?
| A．haven’t | B．don’t | C．has | D．Does |