What ______ his mother______ (do) when he opened the door?
举一反三
- What _____ he _______ (do) when his mother opened the door?
- When he _______ the door, he found his keys were missing. A: was opening B: opened C: had opened D: was to open
- When he opened the door, he used too much force and _______ the key.
- What did Tom do last night A: He went to the party. B: He did his homework. C: He helped his mother do the housework.
- What does Tristan do when his mother leaves home at the ranch to the city center?