Though ______ of danger, sightseers have been flocking to the site where the world’s biggest terrorist Bin Laden lived.
| A.warned | B.warning | C.being warned | D.having warned |
— Should people stop using their cars and start using public transport?
— __________. The roads are too crowded as it is.
| A.All right | B.Exactly | C.Go ahead | D.Really |
When the spaceship traveled above, __________ new-looking earth appeared before us, ______ earth that we had never seen before.
| A.a; an | B.the; an | C./; the | D.a; the |
— What can I do for you?
— This dress is too small. Is it _____________ in a larger size?
| A.convenient | B.available | C.accessible | D.comfortable |
He is only too ready to help others, seldom____, refusing them when they turn to him. 
| A.if never | B.if ever | C.if not | D.if any |
Many people have been ill from a strange disease these days, _____ we’ve never heard of before.
| A.it | B.that | C.one | D.this |