It’s more than half a century ________ my grandfather joined the Party and became a servant to the people.
| A．since | B．that | C．when | D．while |
My English has greatly improved , ______ I practice using it every day.
| A．until | B．unless | C．though | D．as |
Your plan is far from satisfaction , so you must ______ more time and energy to it.
| A．earn | B．spend | C．devote | D．waste |
You should spend more time ______ the lessons.
| A．to study | B．study | C．to studying | D．studying |
----May I listen to the music here, Mr. White?
----Sorry , you’d better ____ it like that..
| A．not to do | B．not do | C．don’t do | D．not do so |
The suggestion we should have a discussion on this problem is not the one ________he made.
| A．that, / | B．/, which | C．which, that | D．which, / |