__________, and you'll get your research findings recognized in the medical circle.
| A．Making a bit more effort | B．If you make a bit more effort |
| C．Given a bit more effort | D．A bit more effort |
Samuel Clemens, _____ Mark Twain, because a famous American writer.
| A．was known as | B．known as | C．was known for | D．known for |
– Could you tell me his phone number?
-- _______ the phone book and find it out yourself.
| A．Look up | B．Search for | C．Refer to | D．Going through |
She ____ his number in the phone book to make sure hat she had got it right.
| A．looked up | B．looked for | C．picked out | D．picked up |
– You’re left the light on.
-- Oh, so I have. _____ and turn it off.
| A．I’ll go | B．I’ve gone | C．I go | D．I’m going |
With him ______ the way, we had little trouble finding the school.
| A．leading | B．to lead | C．led | D．lead |