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

 I _______ on my computer when it suddenly _______.

76/102

 I _______ on my computer when it suddenly _______.

played / crashed

was playing / was crashing

played / was crashing

was playing / crashed

Giải thích

Chọn đáp án: D