I heard Lucy ________ happily in her room when I passed her house.

Shanghai Waihuan Tunnel is already open to traffic, so it will take us ______ time to go to Pudong International Airport.

Why ______ a bad idea to ask Amy for advice?

People ______ the west often celebrate Halloween ______ many ways.[ ]

Huck, how old is your mother this year? —. And we had a party for her birthday last weekend.