The split between humans and living apes is thought by some scholars ____ 15 to 20 million years ago.
| A．to occur | B．occurring | C．to have occurred | D．having occurred |
If students have free ____ to the public library, they will be likely to do more reading.
| A．entrance | B．way | C．access | D．road |
—How about going for a picnic this weekend?
— Why not? _________.
| A．I’ve got that | B．It’s up to you. | C．Have a good time | D．That’s all right. |
In the old days, people ______ a fire with wood in our village.
| A．were used to make | B．used to making | C．used to make | D．used making |
I have to walk to school today because my bike _____now.
| A．is being repaired | B． has been repaired | C．is repaired | D．has repaired |
My first______ of him was that he enjoyed telling jokes.
| A．expression | B．attention | C．satisfaction | D．impression |