They are not ______ to attain their object because they are not united together.
| A．likely |
| B．probable |
| C．possibly |
| D．probably |
It is usually warm in my hometown in March, but it ______ be rather cold sometimes.
| A．must | B．can | C．should | D．would |
The atmosphere of the earth ______ us from the strong sun light.
| A．prevents | B．keeps | C．stops | D．protects |
Don’t disturb me. I_______ letters all morning and have written ten so far.
| A．have written | B．am writing | C．was writing | D．have been writing |
All his friends and relatives came to ______ him on his daughter’s being admitted to Qin Hua University.
| A．celebrate | B．congratulate | C．memorize | D．respect |
_______Barbara Jones offers to her fans is honesty and happiness.
| A．Which | B．What | C．That | D．Whom |