Workers who cannot speak good English may be at disadvantage ____ with foreign customers. 
#80976
A
when interacting
B
when interacted
C
when to interact
D
when being interacted
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So much of  interest ___ that most visitors simply run out of time before seeing it all.
#84490
A
offers Beijing
B
Beijing offers
C
does Beijing offer
D
Beijing does offer
 There are some health problems that, when ______ in time, can become bigger ones later on.
#80687
A
not treated
B
not being treated
C
not to be treated
D
not having been treated
We have been on duty for four hours and ____. 
#83920
A
now comes your turn
B
now does your turn come
C
now your turn comes
D
comes now your turn
----- What made you so upset? -----_____ my house _____ saying goodbye.
#83986
A
Jim left; without  
B
Jim’s leaving; instead of
C
That Jim left; without
D
Jim leaving; instead of