There’s a feeling in me we’ll never know what a UFO is —not ever .
| A．that | B．Which | C．of which | D．what |
The beef is too expensive. I won’t buy it _____.
| A．at that price | B．at a that price |
| C．on that price | D．in that price |
The medicine _____ natural plants.
| A．is made of | B．is made from |
| C．is made in | D．is made into |
----- I’m going to the States.
----- How long ______ you ______ in the States?
| A．are; stayed | B．are; staying |
| C．have; stayed | D．did; stay |
I don’t think _____ possible to master a foreign language without much memory work.
| A．this | B．that | C．its | D．it |
----- My father will be here tomorrow.
----- Oh, I thought that he _____ today.
| A．was coming | B．is coming | C．will come | D．comes |