It is now a children’s festival, _____ they can ______ and go to their neighbors’ homes to ask for sweets.
The police ________him to see if he had a gun.
Is this museum _______some German friends visited the day before yesterday?
The visitors saw rows of houses the roofs _______are red.
As is known to all, China _______the group of developing countries.
There is no doubt _______international cooperation is the key to dealing with cyber crime.