It was __ _ that he had to ask for help.
| A.such big a job | B.so a big job | C.so big a job | D.a such big job | 
Weclimbedhigher_____wemightseethescenesbetter.
| A.sothat | B.even though | C.in case | D.as if | 
According to the factory safety rules, all accidents _____ be reported to the safety officer.
| A.may | B.can | C.would | D.shall | 
John seemed puzzled about _____ the question meant.
| A.how | B.why | C.what | D.Which | 
Everyone tells me I’m a good speaker, _____ I really don’t like speaking in public.
| A.and | B.so | C.but | D.or | 
—You've got a cold, not the H7N9! Everything will turn out OK.
  —______! I have been worrying about it for days.
| A.What a relief | B.That's for sure | C.How surprising | D.I'm sorry to hear that |