My mother told me she _______ very tired since she came back from a visit to our grandparents.
A. was
B. had been
C. is
D. has been
Giải bởi Vietjack
Đáp án: B
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He'll be remembered both as a brilliant Physician and as a true _______.
Science is used in all corners of the world for the __________ of human.
Put plants __________ a window so that they will get enough light.
She seems to have spent all her life studying in _______ establishments.
Choose the letter A, B, C or D to complete the sentences
The new invention may receive a lot of __________ from the public.
