After the janitor ________ the gate, he brought the dangerous ...

[ Past Perfect or Past Perfect Continuous ]

After the janitor ________ the gate, he brought the dangerous dogs too.

A. had locked

B. had been locking

C. had lock

Select your answer:

Other quiz:

Conjunctions › View

———- the researchers developed the first flu vaccination recently was there a reliable protection against the flu.

A. Athough

B. Whether

C. Not until

D. Since

E. No matter

Grammar › View

John wanted to read ____ comic book.

A. a

B. an

C. the

D. –