With sufficient scientific information a manned trip to Mars should be _____.
It is already 6:00. Don’t turn on the computer. Father is _____ to come back at any moment.
Tiring as it might be, the military training ______ the best opportunity to make lifelong friends.
The house _____ Mozart composed “The Magic Flute” is a museum now.
You have to keep alert when you are in the supermarket; otherwise, you might _____ what you actually don’t need at all.
When the meeting was over, he _____ writing a report about it immediately.