— Tom isn’t happy today. Do you know the_____?
— His dog is ill. That makes him sad.
| A．why | B．world | C．life | D．reason |
They ________ next Monday.
| A．gets married | B．got married |
| C．gotten married | D．will get married |
Teenagers should try_______best to get good grades and not let their parents or teachers _________
| A．them, down | B．their ,down |
| C．them’s , happy | D．their, happy |
The woman _______ is singing in the hall is our teacher.
| A．what | B．which | C．who | D．whom |
Jessica's parents always encourage her ________ out her opinions.
| A．speak | B．speaking |
| C．to speak | D．will speak |
I still remember the college and the teachers________ I visited in London years ago.
| A．what | B．who | C．that | D．which |