_______ their service, the workers of the hotel are active in learning English.
#97633
A
Improving
B
To improve
C
Improve
D
Having improved
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The wonderful time they had been looking forward ____ at last.
#97310
A
to arrive    
B
to arrived   
C
to arriving  
D
should arrive
We watch the children _______ into the water from the _____ board.
#93619
A
diving; diving
B
diving, dived
C
dived; dived
D
dived; diving
It remains doubtful whether the project _____________ next month will bring profits to the company. 
#96475
A
accomplished
B
to be accomplished
C
having accomplished
D
being accomplished