____ my opinion, we should start out at once.
| A．In | B．On | C．At | D．For |
---I don’t like the guest that is coming to visit this evening.
---_________ you feel about him, try to be polite.
| A．How | B．What | C．Whatever | D．However |
______he came to this small town, he began to like it.
| A．For the first time | B．By the first time | C．At the first time | D．The first time |
--- Why are you so late?
--- I was in half the way when it ________to me that I had left my notebook home, so I had to fetch it.
| A．occurred | B．hit | C．happened | D．reminded |
There______ a number of natural mysteries in the world that even make scientists ______.
| A．exists; confusing | B．are existed; confused |
| C．exist; confused | D．exist; confusing |
The house is easily______ from the rest; it has a large blue door.
| A．picked up | B．taken up | C．picked out | D．made out |