________ a difficult situation, so you should send him a message and give him some advice.
| A．As he is in | B．He is in | C．Being in | D．He being in |
I saw Mary ____ the house.
| A．open the door and go into | B．to open the door and to go into |
| C．open the door and to go into | D．open the door and went into |
Mr. White was seen ______ the Palace Museum.
| A．enter | B．to enter | C．entered | D．to entering |
I was surprised______.
| A．watching him to eat so quickly | B．watch him eat so quickly |
| C．watching him eat so quickly | D．to watch him eat so quickly |
I know him ______ a good football player while in college.
| A．to have been | B．to be | C．was | D．had been |
Nobody likes ______.
| A．to speak ill of | B．to be spoken ill of | C．speaking ill of | D．spoken ill of |