—Mom，dad is smoking again!
—Well，let him cut it ________ gradually since old habits die hard.
| A．off | B．down | C．up | D．out |
___ I came to the city , I was deeply impressed with its beautiful scenery .
| A．For the first time | B．At first | C．It was the first time | D．The first time |
Have you got any particular plans for the coming holiday?
Yes._______, I’m going to visit some homes for the old in the city.
| A．If ever | B．If busy | C．If anything | D．If possible |
The reason ____ he was late for class was ____ he stayed up late last night.
| A．why; that | B．why; because | C．that; that | D．that; because |
.It’s about a time _____ there were black slaves in North America.
| A．where | B．when | C．how | D．that |
.Their leaders often come to see what difficulty the workers have ____ the plan .
| A．to carry out | B．carrying out | C．carri ed out |
D．with carrying out |