I hit my knee ______ the corner of the table.

A．in a certain extent

B．to a certain extent

C．I wonder

D．everyone doubt

A．disturbance

B．crisis

C．violence

D．demonstration

A．if

B．for

C．and

D．only

A．urged

B．encouraged

C．promised

D．persuaded

A．honest

B．sincere

C．many

D．deepest

A．period

B．duration

C．course

D．length

A．to go swimming

B．going swimming either

C．to be going swimming

D．go swimming

A．would be

B．being

C．was

D．to be

A．promised

B．attributed

C．granted

D．qualified

A．will see her off

B．would see her off

C．would have seen her off

D．must have seen her off