Some researchers believe that there is no doubt______a cure for AIDS will be found.
A.whether | B.that |
C.what | D.which |
______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 |
In middle schools all over China, boys_____not to wear their hair long.
A.will be requested | B.have requested | C.are requesting | D.are requested |