Our teacher is always busy preparing lessons
until 11 o’clock at night, we students have gone to sleep.
| A．that time | B．by which time |
| C．by that time | D．which time |
You’d better make a mark ______ you have any questions.
| A．at which | B．at where | C．the place | D．where |
Jack is a good friend _______, and he often comes to our home for a visit.
| A．of my father | B．of my father’s | C．for my father | D．in my father’s |
We like the oil painting better, ______ we looked at it.
| A．as | B．while | C．the moment | D．the more |
The driver drove _______ hit at a big tree and the car came to s stop.
| A．too carelessly to | B．carelessly enough to |
| C．so carelessly that he | D．so careless that he |
The suit _____ over60 dollars.
| A．had costed | B．costed | C．is costed | D．cost |