Adverbial Clause of Time

The students were all laughing and chatting ___________ the headmaster opened the classroom door.

• when

• since

• after

__________ the young singer’s superb performance, all his fans approached him for an autograph.

• since

• after

• when

All the students and the teachers left the school building _____________ they heard the fire alarm.

• after

• as soon as

• until

Don’t worry, we will wait for you ____________ you finish.

• after

• before

• until

____________ I was talking on my cell phone, my kid brother hit me over the head with one of his sneakers.

• until

• as soon as

• while

Bobby got into an accident _______ he was driving to the mall with his mom.

• since

• while

• before

We had to pray together ______ we started the class.

• since

• until

• before

_________ the earthquake stops, people go out from their hidings.

• as soon as

• before

• since

The students don't dare to see the teacher _______ the teacher glanced at them.

• since

• whenever

• before

___________ we left, we locked all the doors and the gate.

• since

• until

• before