Fill in the blanks with the correct article (a, an, or the). "After...

According to the text, what is the primary cause of air pollution?

Choose the sentence that demonstrates the correct use of “just”.

The expression "But" in "But on you will go" could be replaced without changing the meaning by:

Choose the correct preposition to complete the idiomatic expression: The new employee quickly fell _____ with his colleagues and became an integral pa...

Which of the following sentences correctly uses the comparative form of the adjective "intelligent"?

Read the text below and choose the alternative that correctly fills in the blank. “When looking for an apartment in the United States, it is common fo...