-------Helen, will you be at the party tonight?
-------Yes，but I really____________as I have so much homework to do．
| A．can’t | B．mustn’t | C．shouldn’t | D．won’t |
The teacher just took down the names of the students _______ during the exam.
| A．caught cheating | B．caught to cheat |
| C．catching cheating | D．to catch cheating |
______ to get a seat for the concert, he didn’t mind standing in a queue all night.
| A．Determine | B．To be determined |
| C．Determined | D．Being determined |
_____ from other continents for millions of year, Australia has many plants and animals not found in any other country in the world.
| A．Being separated | B．Having been separated |
| C．Having separated | D．To be separated |
______ at the top of the Oriental Tower, people below will look very small.
| A．Stand | B．Standing | C．To stand | D．If you stand |
The pen I _____ I_______ is on my desk, right under my nose.
| A．think...lost | B．thought...had lost |
| C．think...had lost | D．thought...have lost |