It was unbelievable that the fans waited outside the gym for three hours just ______ a look at the sports stars.
A. had B. having C. to have D. have
He transplanted the little tree to the garden ______ it was the best time for it.
A. where B. when C. that D. until
______ into use in April 2000, the hotline was meant for residents reporting water and heating supply breakdowns.
A. Put B. Putting C. Having put D. Being put
He got well-prepared for the job interview, for he couldn’t risk _______ the good opportunity.
A. to lose B. losing C. to be lost D. being lost
Professor Smith, along with his assistants, ______ on the project day and night to meet the deadline.
A. work B. working C. is working D. are working
The shopkeeper did not want to sell for ______ he thought was not enough.
A. where B. how C. what D. which
