Question

Choose the correct form. They seldom quarrel / are quarrelling. The Earth moves round the Sun / is moving. Now they are crossing / cross the street. Birds fly / are flying to warm countries in autumn. The children often laugh / are laughing at their funny little friend.

Answer 1

They seldom quarrel. - Present Simple

The Earth moves round the Sun. - Present Simple

Now they are crossing the street. - Present Continuous

Birds fly to warm countries in autumn. - Present Simple

The children often laugh at their funny little friend. - Present Simple

Answer 2

The correct forms are:

1. They seldom quarrel.
2. The Earth moves round the Sun.
3. Now they are crossing the street.
4. Birds fly to warm countries in autumn.
5. The children often laugh at their funny little friend.