It took him ____ to find the key to the drawer.

Do you know the man _______ is talking with our English teacher?—Oh, he must be Lin Tao’s father. He was looking for Lin Tao just now.

The sweater is _______ us to go hiking today.[ ]

That is a door ______ the world.[ ]

Linda, I called you this morning, but nobody answered the phone. —I’m sorry. I a picnic with my family then.