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.)