To learn English well, we should find opportunities to hear English ________ as much as we can.
His way of speaking suggested that he ____ very angry.
Pine trees, of which there are almost one hundred _____, are found throughout the North Temperate Zone.
The salmon dish was _______, wasn’t it?
The conference had been held to discuss the effects of tourism ___ the wildlife in the rainforest.
Specialists may be useful to _____ a situation and suggest solutions.