Although the peak travel time for Chinese railway doesn't start until Jan 19 this year, people who're eager to get a seat on the train _______ already _______ their struggles.
#100687
A
are; starting
B
has; started
C
have; started
D
are; started
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--How did he get infected? --She ____the viruses without any protection.
#101629
A
exposed to
B
had exposed to
C
was exposed to
D
had been exposed
—The dinner was delicious!  —I agree. I am so full.  —That’s too bad. But some dessert ____. 
#104213
A
has ordered
B
will be ordered
C
has been ordered
D
was going to be ordered
 All the preparations for the task ________, and we're ready to start.
#99462
A
completed
B
have completed
C
will be completed
D
have been completed
—Why didn’t you buy the gold ring? —I ______ but I didn’t have the money.
#103211
A
would have
B
bought
C
would like to
D
had bought