Scientists study ________ human brains work to make computers.
| A．when | B．how | C．that | D．whether |
—Well, I do think the iPod is a smart, convenient and intelligent.
—_____.
| A．So it is | B．So is it | C．So does it | D．So it does |
So difficult______ it to acquire a large vocabulary without the help of a teacher that he was close to giving up .
| A．he have felt | B．have he felt |
| C．he did feel | D．did he feel |
_____，I can’t express myself in words.
| A．So long as I am fond of |
| B．Now that I am fond of |
| C．Much as I am fond of her |
| D．As I am fond of very much |
----______ I passed the interview!
___ Good luck to you. next time!
| A．If only | B．Only if | C．If | D．When |
—It angered me that a neighbour accused me ________ kicking her pet.
—Oh, you had the right to defend yourself ______ her accusation.
| A．of; against | B．for; from | C．against; for | D．for; against |