Had the government limited the sales of cars much earlier, traffic jam and pollution _______so serious now.
I love the weekend,because I_____ get up early on Saturdays and Sundays.
needn't
mustn't
wouldn't
shouldn't
The students have been working hard on their lessons and their efforts______ success in the end.
rewarded
were rewarded
will reward
will be rewarded
The most pleasant thing of the rainy season is _____ one can be entirely free from dust.
what
that
whether
why
______ over a week ago, the books are expected to arrive any time now.
Ordering
To order
Having ordered
Ordered
My grandfather still plays tennis now and then, ________he's in his nineties.
as long as
as if
even though
in case