COLLOCATIONS

Question 1

ahead of time

Answer 1

ahead of time - before the usual time or the time expected; “she graduated early”; “the house was completed ahead of time”

Question 2

Hum and haw

Hem and haw

Answer 2

hum and haw
UK (US hem and haw)

to be uncertain and take a long time deciding something:
We hummed and hawed for months before actually deciding to buy the house.