Has everything _____ can be done ______?
| A．what; done | B．that; been done |
| C．that; already done | D．what; already being done |
We want to encourage students to ________ the running of the college.
| A．join | B．attend | C．participate in | D．participate |
We didn't know you were in trouble at that time, ________ we would have given you a hand.
| A．therefore | B．however |
| C．otherwise | D．though |
______ surprised the family most was ________ the girl played basketball very well.
| A．That; that | B．That; what | C．What; that | D．What; what |
_______ in the jungle, the explorer had little hope to find his way out.
| A．Leaving | B．To be left |
| C．Having left | D．Having been left |
Many students urged that the school readingroom ________ open during the vacation.
| A．kept | B．be kept | C．should keep | D．was keep |