—Peter!Let's hurry.The boss is coming.—Oh,I was afraid that we ________ her.
— Why don’t you attend the meeting _________ now?— I am sorry I can’t. I am preparing for the meeting __________ tomorrow.
Once out of the earth’s gravity, the astronaut is________ by the problem of weightlessness.
It took Mary quite a long time to ________ a new dress at the store.
—Would you like to go to the cinema with me tonight?— I’d like to, but it remains ________ whether I can finish my homework in time.
—Which of those T-shirts do you like most?—________ of them. They are both nice and comfortable to wear.