---What have you learned from your experience in the USA?
---Well, meeting people from another culture ______ be very difficult.
| A．must | B．can |
| C．should | D．shall |
In fact, the house as well as his two cars ______ him all the money he earned during the 20 years．
| A．has been cost | B．have cost | C．has cost | D．have been cost |
---You should say sorry to her, Tom．
--- ______, but it’s not going to be easy．
| A．I suppose so． | B．I feel so． | C．I prefer so． | D．I like to． |
Canada is a country ______ many different nationalities as well as one with foreign immigrants ______ the majority of its population．
| A．consisting of; making up | B．making up of; occupied with |
| C．made up of; consisting of | D．consisted of; taking up |
．--- Where are you, Nancy?
--- Here in the sitting room, _______ to Professor Smith．
| A．is writing | B．write | C．to write | D．writing |
--- Where will you start your work after graduation?
--- Mmm, it’s not been decided yet．I _______ continue my study for a higher degree．
| A．can | B．must | C．would | D．might |