Tom's worry is he won't be chosen for the school football team．
| A．that | B．whether | C．when | D．why |
20.American women usually identify their best friend as someone ____ they can talk frequently.
| A．who | B．as | C．about which | D．with whom |
19.There are two buildings, ____ stands nearly a hundred feet high.
| A．the larger | B．the larger of them | C．the larger one that | D．the larger of which |
18.When we were young, every evening we ____ stay at home waiting for our mother.
| A．would | B．might | C．should | D．could |
17. — I’m sorry. I ____ hurt you.
— Forget it.
| A．haven’t meant to | B．am not meant to | C．didn’t mean to | D．never mean to |
16. —Who____ it be that is knocking at the door?
—It ____ be Father, but I’m not sure.
| A．can; must | B．can; may | C．must; can | D．may; must |