—What’s Jack up to in the shoe shop? He’s there for ages.—It’s ______ that he hasn’t decided which pair to buy.
All of the students were ______ by the ______speech given by the headmaster.
If you ______ with your classmates, you will surely get the same work done far better.
–Why, David, you look so tired! –Well, I ______ a report for the whole day and I must finish it tomorrow.
We promise ______ attends the party a chance to have a photo taken with the movie star.
The engine of the bus was ______,and the bad weather added to the worries of the passengers.