Plenty of people went to America in _____________．
So they did． My grandfather was one of them． He went there in his_____________．（ ）
| A． |
1990s； thirties |
B． |
1990s； thirty |
| C． |
the 1990s； thirtieth |
D． |
the 1990s； thirties |
Ann has got a letter from her best friend.It makes ___________ quite excited.
| A． |
she |
B． |
her |
C． |
hers |
D． |
herself |
Listen!Our science teacher _______________the use of the robot.
| A． |
explains |
B． |
explained |
| C． |
is explaining |
D． |
has explained |
There are many_____________ teachers in this primary school.
| A． |
woman |
B． |
woman's |
C． |
women |
D． |
women's |
The Tianwen﹣1 Probe landed on Mars___________ May 15th，2021.
| A． |
at |
B． |
in |
C． |
to |
D． |
on |
Taking the train is _________good way to see the world.
| A． |
a |
B． |
an |
C． |
the |
D． |
/ |