Question 42: Despite all the interruptions, he____ with his work.
– press ahead/ on (with sth): to continue doing sth in a determined way; to hurry forward : to hurry, to hurry, to hurry,
Eg: The company is pressing ahead with its plans for a new warehouse.
– hold on: hold tight, hold the phone, wait
Eg: Hold on a minute while I get my breath back.
– stick at sth: work hard, persistently continue
– hang out: spend time in a certain place
Eg: The local kids hang out at the mall.
=> Answer A (Despite the interruptions, he persisted with his work.)