"How long has that phone been used by our teacher?" said the boy. => The boy wanted to know how long that phone had been used by their teacher.

How about going on a picnic this weekend? => Why don't we go on a picnic this weekend?

He suggested watching a comedy. => "Let's watch a comedy," he said.

Although he was ill, he still went to school. => In spite of being ill, he still went to school.

Because there was a heavy traffic jam, we were late. => Because of the heavy traffic jam, we were late.

It's a pity. He can't type the letter carefully. => He wishes he could type the letter carefully.

Lan doesn't help her mom cook dinner. Her mom is angry now. => If Lan helped her mom cook dinner, her mom wouldn't be angry now.

Sue didn't tell him the truth. He was so disappointed about her. => He would not have been so disappointed about her if Sue had told him the truth.