But for the fact that Mr Smith ________ill yesterday, he would have attended the important meeting.
| A．was | B．be | C．were | D．had been |
In the past three months, Hong Kong ________ the number of tourists from the mainland decline.
| A．witnesses | B．witnessed |
| C．has witnessed | D．was witnessing |
April 23 marks World Book Day, also ________ as International Day of the Book, which was
celebrated for the first time on the 23rd of April, 1995.
| A．known | B．knowing |
| C．to be known | D．being known |
Never drink too much wine again. It ________have got you killed!
| A．must | B．might | C．should | D．would |
You can’t imagine ________ little time I spent with my parents in those busy days.
| A．how | B．that | C．which | D．what |