________ occurred to me that the murder happened ________ a rainy day.[ ]

How do you find your trip to Taiwan during the week-long National Day Holiday—________ I can’t speak too highly of it.

_____________ the ability to speak, so he used sign language to communicate with others

In the crosslake swimming race, a boat will be ________ in case of emergency.

He seldom revised for exams, ___________ he —___________. He always got low marks in exams.