Ask yes/no questions. 1.when we got there the guests had already left the party. 2.my friends had visited the countryside by that time yesterday. 3.hardly had the forester left there when the men destroyed the forest. 4.the students had solved global ecological problems in the camp by 5 yesterday. 5.the children had studied the rainforest ecology and wildlife before they came to africa.
2Had my friends visited the countryside by that time yesterday?
3Had the forester hardly left there when the men destroyed the forest?
4Had the students solved global ecological problems in the camp by 5 yesterday?
5Had the children studied the rainforest ecology before they came to Africa?