2. The rescue operation was arranged by a charity organization. It was a success.
⇒The rescue operation which was arranged by a charity organization was successful.
⇒Dùng which cho rescue operation để nối lại câu,
3. My uncle is a firefighter. He visited us last weekend.
⇒My uncle visited us last weekend who is a firefighter.
⇒Vì có is nên dùng who.
4. The storm started at 2 o’clock this morning. It caused a lot of damage.
⇒The storm which caused a lot of damage started at 2 o’clock this morning.
⇒Để chỉ cơn bão thì dùng which.
5. Nick is my classmate. I’ve known him for a long time.
⇒I've known Nick for a long time who is my classmate.
⇒Có to be is nên dùng who phía trước
6. There are about one billion people. They use English as the lingua franca of international communication.
⇒There are about one billion people who use English as the lingua franca of international communication.
⇒CÓ động từ use nên dùng who
7. Differences between languages can cause some problems to learners. Differences between languages are explained in course books.
⇒ Differences which are between languages can cause some problems to learners and are explained in course books.
⇒Vì có to be are và không chỉ người nên dùng which.
#NOCOPY
#NOPLAGIARISM