This is _______ difficult problem that few students can work it out.
#39315
A
so
B
so a
C
such
D
such a
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I didn’t understand ________________ , so I raised my hand to ask him.
#39210
A
what my teacher says
B
what does my teacher say
C
what my teacher said
D
what did my teacher say
---Go and ask the waiter how much_____.---Don’t worry. It has been _____.
#38235
A
does the meal cost, paid for  
B
the meal costs, paid
C
the meal spends, paid
D
the meal costs, paid for
---Do you know _____ back tomorrow?-  --Sorry, I don’t know. When he _____ back, I’ll tell you.
#38882
A
when does he come, comes
B
when he comes, will come
C
when he will come, comes
D
when will he come, will come
— Do you know ______ for New York last night? — At 9:00.
#38564
A
what time he leaves
B
what time he left
C
what time does he leave
D
what time did he leave