Barack Obama has taken personal blame ________ the security failures which led ________ the attempt to blow up a plane on Christmas Day.
| A．of; to | B．for; to | C．on; on | D．in; on |
Many things _______ impossible in the past are common today.
| A．considering | B．to consider | C．considered | D．being considered |
I rushed there in a taxi only _______ the library_______.
| A．finding; closed | B．finding; shut | C．to find; close | D．to find; closed |
You can close your umbrella. The rain seems _______.
| A．stopping | B．to stop | C．to have stopped | D．having stopped |
My work_______, I went home .
| A．had been done | B．done | C．having done | D．to be done |
A phone call sent him_______to the hospital.
| A．hurry | B．hurrying | C．to hurry | D．hurried |