Mr. White is a careful and experienced engineer, so he is often to finish some challenging tasks.
A.appreciated | B.approached | C.appointed | D.agreed |
Daniel's family____their holiday in Huangshan this time next week.
A.are enjoying | B.are to enjoy |
C.will enjoy | D.will be enjoying |
– I wonder how much you charge for your services.
-- The first two are free ____ the third costs $30.
A.while | B.until |
C.when | D.before |
We can never expect____ bluer sky unless we create_____less polluted world.
A.a; a | B.a; the |
C.the; a | D.the; the |
She’ll never forget her stay there ________ she found her son who had gone missing two years before.
A.that | B.which | C.where | D.when |
My uncle’s house in the downtown area is much smaller than ours , but it is twice _______ expensive .
A.as | B.so | C.too | D.very |