2．Despite the fact that Betty is a lovely girl, she___________be extremely difficult to work with sometimes.
| A．must | B．should | C．would | D．Can |
He started to learn English in 1990 and in the years ________ he kept on using it in his work.
| A．following | B．followed | C．follow | D．that followed |
Excuse me for breaking in, ______ I have some news for you.
| A．so | B．and | C．but | D．yet |
Why pleasant smells do not reduce pain in man is a question still _______ by scientists.
| A．answered | B．being answered | C．to be answered | D．that answered |
I am told to guess the meaning of an unknown word, but my question is _______ I still can’t
understand its meaning.
| A．that if | B．whether why | C．how if | D．what if |
Throughout______ history, ______ English language is made up of the rules each group of people brought to Britain with them.
| A．the, the | B．/,the | C．the,/ | D．/,/ |