1. The meeting will be held before May Day

2. Oil has been found in the Antarctic

3. This dictionary isn't used very often

1. They said they had to go home then

2. I asked the children who had taken part in their excursion to the city

3. She asked me if I had many friends

D.

1. worked since last year

2. my mother could speak English

`~rai~`

$\begin{array}{I}II.\\\text{1.The meeting will be held before May Day.}\\\text{2.Oil has been found in the Antarctic.}\\\text{3.This dictionary isn't used very often.}\\III.\\\text{1.They said that they had to go home then.}\\\text{2.I asked the children who had taken part in their excursion to the city.}\\\text{3.She asked me if I had many friends.}\\\text{D.Writing.}\\\text{1.My brother has worked since last year.}\\\text{2.I wish my mother could speak English.}\end{array}$