Directions: Which of the phrases (a), (b), (c) and (d) given below should replace the phrase given in bold the following sentences to make the sentence grammatically meaningful and correct. If the sentence is correct as it is and there is no correction required mark (e) as the answer.
What time did you get home last night? Your mother and I waited up for you until 2 am.
1
had waiting
2
wait in
3
wait upon
4
waited upon
5
No improvement