-----Is it good to look up every new word when I come across it in reading?
-----No. You _______ because you are likely to guess the meaning from the context.
| A．can’t | B．mustn’t | C．don’t have to | D．shouldn’t |
Someone who lacks staying power and perseverance is unlikely to ______ a good researcher.
| A．make | B．turn |
| C．get | D．grow |
.-- His father is a professor and has been teaching in the university for more than twenty years.
-- _____.
| A．So is his mother | B．So has his mother |
| C．So his mother does | D．So it is with his mother |
.Why? I have nothing to confess. _______ you want me to say?
| A．What is it that | B．What it is that |
| C．How is it that | D．How it is that |
.Don't have your children _____ for hours reading books in _____ dark a room.
| A．sitting; so | B．sit; such |
| C．to be sitting; so | D．to sit; such |
You were stupid to climb up that big tree. You ______ yourself.
| A．must have killed | B．can have killed |
| C．should have killed | D．might have killed |