Please hold on to _____you are strong and try to improve the weak subjects.
| A．when | B．where | C．what | D．which |
_________ is known to everybody,the moon travels round the earth once every month.
| A．As | B．It | C．What | D．Which |
.Mary was _________ the letter from Tom,but it didn’t reach her for some reason.
| A．expecting | B．waiting | C．hoping | D．longing |
.Hundreds of people leave their village to seek their _________ in cities.
| A．luck | B．chance | C．fortune | D．future |
—Johnson failed to get a good job in that company.
—He should have _________ the best of chance.
| A．used | B．wasted | C．made | D．taken |
Many new _________ will be opened up in the future for those with a university education.
| A．opportunities | B．necessities | C．realities | D．probabilities |