We __________ 1000 English words since we __________ to learn English.
A.learned; begin | B.have learning; began |
C.have learn; begun | D.have been learning; began |
We __________ 1000 English words since we __________ to learn English.
A.learned; begin | B.have learning; began |
C.have learn; begun | D.have been learning; began |