_____ do you go to the cinema — Once a month.

Everyone must _____ the security check (安检) before getting on the plane at the airport.—Yes. It’s necessary to ensure the passengers’ safety.

To write a good article, you must first____ your ideas very carefully.

________ the fact that they were in trouble, they still managed to help us with some money

The construction of the two new railway lines ________ by now.[ ]