THE ROADS4;LRE SLIPPERY. IT ~ HEAVILY LAST NIGHT.A. MUST RAIN' B. M...

8. - DE LUYEN THI + DAP AN
DE LUYEN THI + DAP AN

8. The roads4;lre slippery. It ~ heavily last night.

a. must rain' b. must be raining

c. must be rained d. must have rained