The ground is _______ with _______ leaves.
| A．covering, falling | B．covered, falling | C．covered, fallen | D．covering, fallen |
Jerry did not regret giving the comment but felt ______ he could have expressed it differently.
| A．why | B．how | C．that | D．whether |
One learns a language by making mistakes and ______ them.
| A．corrects | B．correct | C．to correct | D．correcting |
By the time you have finished this book, your meal ______ cold.
| A．gets | B．has got | C．will get | D．is getting |
—Look at those clouds!
—Don’t worry. ______ it rains, we’ll still have a great time.
| A．Even if | B．As though | C．In case | D．If only |
Don’t handle the vase as if it ____ made of steel.
| A．is | B．were | C．has been | D．had been |