Chiều cao hình bình hành là:

     \(\dfrac{3}{5}:\dfrac{1}{2}=\dfrac{3}{10}\left(cm\right)\)

         Đ/s:...

1. Mr. Ken, ______ is living next door, is a dentist.

A. that           B. who            C. whom             D. what

2. Her computer ______ was my friend’s got broke.

A. which           B. whom            C. who             D. that

3. The man _______ she wanted to see her family.

A. which           B. where             C. whom          D. who

4. Her grandmother, _______ is 70, often takes exercise.

A. what             B. who                 C. where          D. which

5. The woman _______ came here two days ago is her professor.

A. who              B. that                 C. whom            D. what

6. The really happy people are those ……enjoy their daily work. 

A. what              B. who                  C. which             D. where

7. Freedom is something for ________ millions have given their lives.

A. which            B. where              C. whom           D. who

8. My girlfriend loves tokbokki, _________ is Korean food.

A. which            B. where               C. whom             D. who

9. Blair has passed the exam last week, ________ is great news.

A. who                B. that                   C. which             D. whom

10. The book ________ is in the car is his brother’s.

A. who                 B. that                   C. which              D. whom

11.The man_____ lives behind my house is a doctor.
A.that          B. who            C. which          D. whom

12.Peter, _____ I played video games with on the weekend, was younger than me.
A.that             B. who            C. which               D. whom

13.The old building__________is in front of my house fell down.
A. of which              B. which               C. whose               D. whom

14.We’ll come in July __________the schools are on holiday.
A. that          B. where           C. which          D. when

1.Mobile devices allow students

A.to take part in class activities without physically being there.
B.to work with books and blackboards

2.When my classmates upload their assignments they

A.send their assignments to the teachers, using the Internet.
B.get their assignments from the teachers, using the Internet.

3.In the age of technology, students can easily communicate with each other

A.electronics.
B.electronically.

4.With smartphones, students can download information and

A.put it onto a laptop or desktop for later use.
B.put it onto a laptop or desktop for texting.

5.When I turn off the voice and texting applications in my smartphone, it

A.changes its colour.
B.becomes a mobile computer.

6.Teachers from different countries can use smartphones to

A.share lesson plans.
B.share grades.