He forgot to ____________ the letter into the envelope.
举一反三
- She forgot to __________ the letter into the envelope.
- She forgot to ______ the letter into the envelope. A: insert B: throw C: fold
- She forgot to _____the letter into the envelope. A: insert B: intend C: stop D: make
- She forgot to ____________ the letter into the envelope. A: inserts B: inserted C: inserting D: insert
- He said in his letter that he would _______ some photographs but I couldn’t find anything in the envelope.