_____________ is necessary __________ he trains himself before the Guangzhou Marathon.
A.This, 不填 | B.The, 不填 |
C.It, that | D.This, that |
_____________ is necessary __________ he trains himself before the Guangzhou Marathon.
A.This, 不填 | B.The, 不填 |
C.It, that | D.This, that |