Đề thi thử thpt quốc gia 2019 môn tiếng anh (Đề số 20)

He can borrow this CD _____________ he gives it back to me by Thursday

20/50

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best completes each of the following exchanges.

He can borrow this CD _____________ he gives it back to me by Thursday

unless

in case

as long

provided

Giải thích

Đáp án D