The professor ___ the questions to the students already
A: explains
B: has explained
C: had explaind
D: is explaining
A: explains
B: has explained
C: had explaind
D: is explaining
举一反三
- The professor____________ the questions to the students already. ( has explained, explains )
- The professor _____ the question to the students already. A: was explained B: has explained C: explain D: being explained
- The professor paused as if _____ his students to ask questions on the point he had just made.
- When I got to the station the train ______ left. A: already had B: had already C: has already D: already has
- The professor ____________ the questions to the students already.