John received an invitation to dinner, and with his work ________，he gladly
accepted it.
| A．finished | B．finishing |
| C．having finished | D．was finished |
It is said that they __ $ 200, 000 for the house up to now.
| A．will offer | B．are offering | C．offer | D．have offered |
__ his telephone number or e-mail address, she had some difficulty getting in touch with John.
| A．Not knowing | B．Not to know | C．Not known | D．Not having known |
It was after he went to college __ he realized the importance of forming a reading habit.
| A．that | B．when | C．since | D．as |
— I'll come to listen to your speech at 9:30 tomorrow morning.
— I regret to tell you that by then my speech ____.
| A．had ended | B．has ended | C．will have ended | D．will end |
_____ is the population of China? It is about 1,300,000,000.
| A．How many | B．How much | C．What | D．How |