102 câu trắc nghiệm Thì quá khứ tiếp diễn (Past Continuous) có đáp án

Snow _______ lightly. Suddenly a reindeer appeared.

52/102

Snow _______ lightly. Suddenly a reindeer appeared.

fell

was falling

is falling

were falling

Giải thích

Chọn đáp án: B