A participle has the form of verb + -ing. So the only such word here is 'smiling' that is the participle in this sentence. It modifies 'woman', that is, it refers to how the woman opened the door - smiling pleasantly.
Answer:
The tutor is allowed to help with all of these though...
Explanation:
To get better you should work on skill you might not have understood in past grades.
A tutor should help you find good test taking strategies so you can get done faster and more accurate.
You have to memorize information on your test, it you don't you might fail.
All of these are allowed so it shouldn't be the last one.
This question really doesn't make sense....
