Though he is busy, he is very _____ and makes a telephone call to his parents from time to time and tries his best to spare some time to visit them.
This book teaches us how to analyze _______is causing the stress in our lift.
Martin drove along for more than one hour _____he found a convenient parking place.
—The party will start at 7:00 sharp. Come earlier! —_______. Thanks for your mention.
The place he suggested to us ______ the meeting is a five-star hotel.
We expect Mr. Drew will ______ Class Two when Miss Syme retires.