All _____ is a continuous supply of the necessities of life.
| A．what is needed | B．for our needs |
| C．the thing needed | D．that is needed |
I don’t think _____ possible to master a foreign language without much memory work and practice.
| A．this | B．that | C．it | D．/ |
Work hard at your lessons, ______ you’ll fail the exams again.
| A．and | B．but | C．or | D．which |
He devoted all the time _____ his research .
| A．to do | B．doing | C．to doing | D．did |
Mr. Liu dreamed ____ a big house for his parents after they retire.
| A．to buy | B．to buying | C．of buying | D．of being buying |
On the bus I saw a student____ I thought was your brother.
| A．who | B．whom | C．which | D．/ |