I found that the homework was ______ I used to get in my old school.
| A.not heavy as what | B.as not heavy as that | 
| C.not as heavy as that | D.not as heavy as what | 
They discussed ________ they could settle the problem without others' help.
| A.if | B.that | C.what | D.whether | 
We all know the truth ___ there are air, water and sunlight there are living things.
| A.where | B.wherever | C.that | D.that wherever | 
It ________ Bob drives badly.
| A.thinks that | B.is thought what | C.thought that | D.is thought that | 
Is this ________ we met each other two years ago
| A.place | B.place in which | C.where | D.place which | 
"Do you know ________ " "His father is a doctor."
| A.what is his father | B.who is his father | 
| C.what his father is | D.who his father is |