1. The Nile is the longest river in the world
a.No river in the world is longer than the Nile.
b.The Nile used to be the longest river in the world.
c.The Nile is longer than most of the river in the world.
d.The Nile is among the longest river in the world.
2. Lan’s house is smaller than mine
a.Lan’s house is as small as mine.
b.Lan’s house is the smallest.
c.My house isn’t as small as Lan’s.
d.My house is much bigger than Lan’s.
3. Protecting the environment is important
a.It’s not important to protect the environment.
b.There’s no need to protect the environment.
c.It is important to protect the environment.
d.Protecting the environment isn’t very necessary
4. We started to collect old clothes for our charity programme last week
a.We have collected old clothes for our charity programme since last week.
b.Not until last week did we finish collecting old clothes for our charity programme.
c.We planned to collect old clothes for our charity programme last week.
d.Last week, we encouraged people to donate old clothes for our charity programme.
5. Unless your father leaves right away, he’ll miss the train.
a.If your father doesn’t leave right away, he’ll miss the train.
b.If your father leaves right away, he isn’t likely to catch the train.
c.Your father leaves right away, or he’ll catch the train.
d.Your father can still catch the train if he leaves later.
1. The Nile is the longest river in the world a.No river in the world is longer than the Nile. b.The Nile used to be the longest river in the world. c
By Harper
$\Rightarrow$
1. A ( Sông Nin dài nhất thế giới $\to$ Không có sông nào trên thế giới dài hơn sông Nin ).
2. C ( Nhà của Lan nhỏ hơn nhà tôi $\to$ Nhà tôi không nhỏ như nhà của Lan ).
3. C ( Bảo vệ môi trường là quan trọng $\to$ Điều quan trọng là phải bảo vệ môi trường ).
4. A ( Cấu trúc chuyển từ thì QKĐ sang thì HTHT: S + started/ began + to-V/ V-ing + khoảng thời gian $\Rightarrow$ S + have/ has + PII + since + mốc thời gian/ for + khoảng thời gian ).
5. A ( Unless = If not ).
1a
2b
3d
4a
5b