__________ is really hard _ _ them to climb such a high mountain.
| A．This; to | B．It; to |
| C．This; for | D．It; for |
Digital cameras are becoming very popular, though some still _____ too much.
| A．pay | B．spend | C．take | D．cost |
Do you know any other foreign language _____ English?
| A．except | B．but | C．besides | D．beside |
— Shall we go for a walk outside? -- ______ .
| A．I would be | B．I like | C．I do | D．Good idea |
Mother told me _____ too much time reading novels.
| A．don't to spend | B．not to take | C．not to spend | D．don't cost |
My parents are ______ famous writers.
| A．all | B．none | C．both | D．most |