What you _______ a few minutes ago while your sister _______ the dishes?
A. did...do-washed
B. did...do-was washing
C. were...doing-washed
D. were...doing-was washing
KEY: B
Giải thích: công thức QKĐ while QKTD
Dịch: Bạn đã làm gì vài phút trước khi chị bạn rửa chén vậy?
________ he wasn’t feeling very well, David was determined to take part in the inter-university athletics meet.
__________ what Megan prepared for the job interview, she didn’t pass it.
He had the telephone installed in his car_________ his secretary to be able to contact him wherever necessary.
St. Catherine’s Monastery Library in Egypt is the first in the world ___________in the sixth century.
She hasn't eaten anything since yesterday. She_____ be really hungry.
I am learning skiing at an indoor school________ when I get to Switzerland.
Daisy is reading her English test because she has a test tomorrow. She_____ be studying.