He was so excited and insisted that what he had done completely______ their demand（要求）.
| A．met | B．meet | C．should meet | D．has met |
______life began on the earth is one of the biggest puzzles to scientists.
| A．How | B．What | C．Where | D．That |
---Let’s throw a surprise party for mom’s 50th birthday.
---That’s a good idea．We______several of her friends.
| A．invite | B．have invited | C．are inviting | D．will invite |
______fit, we ought to learn more about our body and be careful with what we eat.
| A．Keeping | B．To keep | C．Having kept. | D．To have kept |
Mike must be angry with me, for he walked______me without even saying hello.
| A．past | B．on | C．at | D．over |
All the organizations involved have sent urgent ______ to government, asking for extra funding.
| A．appeals | B．replies | C．consultation | D．contracts |