It’s hard for us to make a choice, which means we have not decided _____.
| A．to take a step | B．to take which step | C．which step to take | D．to take what |
As is well known, it is Hawking who the theory of black holes.
A, puts forward B, has put forward C, invented
D, raised
When you finished a piece of writing, check that that the tenses are consistent and the
spelling is correct.
A, they are making senses B, it makes sense
C, it makes senses D, they make sense
We all feel it is Jack as well as his wife that ____ for their son’s bad behaviour at school.
| A．is to blame | B．is to be blamed | C．are to be blamed | D．are to blame |
interested her most was the longitude line, is an imaginary line dividing the world.
A, That, it B, What, it C, That, which D, What, which
You must keep your eyes if you are going to make your trip enjoyable and worthwhile.
A, opened, to be B, open, to be C, opened, be D, open, /