Not easy as the problem of pollution is____, no one should just stop trying.
#96406
A
to solve
B
to be solve
C
solving
D
being solved
推荐题目
The old man sat in front of the radio every evening, ______ his favorite program.
#94148
A
dying to hear
B
was dying to hear
C
dying to have heard
D
is dying for hearing
My spoken English was poor and you can imagine what great difficulty I had ______ myself understood.
#90673
A
make
B
to make
C
made
D
making
Take scary rides in the park and you will know what it feels like _____ through the air and take off in a rocket.
#92774
A
falling
B
to fall
C
having fallen
D
when falling
_______ from her parents, she was left with her two young sisters--aged three and seven.
#97247
A
Being separated
B
Having been separated
C
Having separated
D
Had been separated
Besides _____, she is kind and tender.
#98305
A
beautiful
B
being beautiful
C
she beautiful
D
is beautiful