enter， entering or both

[touchstone]

---Is Jack in the classroom?
---Maybe not. I saw him ____ the dining hall just now.
A. entering
B. enter
C. to enter
(a test question)
The answer key is B. But I think A is also OK. What do you say?
Thanks.

 

[Raymott]

A and B are both correct. They mean the same in this context.
I hope the original didn't say "dinning hall"

 

[touchstone]

A and B are both correct. They mean the same in this context.
I hope the original didn't say "dinning hall"

Thanks， Raymott. That's a typo. 'Dinning' should be dining.

 

[touchstone]

What about the following question?
--Is mike in the library?
--Maybe. I saw him ___ out of the room with some books just now.
A. going
B. go
C. to go
D. went
For this context, I think ‘go’ is better than ‘going’ because ‘going out of the room’ is a very short action, you usually see the whole course. What do you say?
Thanks.

 

[Raymott]

It still means the same.
To get a difference, you need a statement such as:
"I saw Tom eating a horse" - Fine, that's possible.
"I saw Tom eat a horse." - This implies you saw him eat the entire horse, and is not likely.