16. He hasn’t come yet. What do you think__________to him?
| A．happens | B．has happened | C．happening | D．to happen |
—I prefer shutting myself in and listening to music all day on Sundays.
—That's ________ I don't agree.You should have a more active life.
| A．where | B．how | C．when | D．what |
Part of the reason Charles Dickens loved his own novel，David Copperfield，was ________ it was rather closely modeled on his own life.(2010·北京)
| A．what | B．that | C．why | D．whether |
I'm afraid he's more of a talker than a doer，which is ________ he never finishes anything.(2011·山东)
| A．that | B．when | C．where | D．why |
I'd like to start my own business—that's ________ I'd do if I had the money.(2011·江西)
| A．why | B．when | C．which | D．what |
Scientists study ________ human brains work to make computers.
| A．when | B．how | C．that | D．whether |