The Methods and Materials is usually written()
A.with simple present tense.
B.with present perfect tense.
C.with simple past tense.
D.with past perfect tense.
正确答案:with simple past tense.
The Methods and Materials is usually written()
A.with simple present tense.
B.with present perfect tense.
C.with simple past tense.
D.with past perfect tense.
正确答案:with simple past tense.