All of students in the country have been away from school for the last four weeks because of of Covid-19.    A. a break-out       B. a breakthrough       C. an outburst       D. an outbreak

SECTION II: LEXICO – GRAMMAR 

Choose the best answer from A, B, C or D to best complete the following sentences.

All of students in the country have been away from school for the last four weeks because of ________ of Covid-19.