Simply learn to live in the present, ________ think so much about the future or the past.
| A．rather than | B．other than | C．more than | D．less than |
By the end of this year, we _____ 2000 English words.
| A．will learn | B．would learn |
| C．have learned | D．will have learned |
_______ knows the truth will tell you about it , I think .
| A．Who | B．No matter who | C．Whoever | D．B and C |
The head engineer is in ________ the project .
| A．his charge of | B．the charge of | C．charge of | D．one’s charge |
______ began our new lesson.
| A．But | B．Such | C．Thus | D．So that |
I didn’t manage to do it _____ you had explained how.
| A．until | B．unless | C．when | D．before |