He observed a stranger _______ around the store at 12 p.m. last night.
#97199
A
to hang
B
hang
C
hanging
D
to be hanging
推荐题目
______ abroad for more than two years, he returned to his hometown.
#89414
A
Studied
B
Studying
C
Having studied
D
To study
 After driving all night we got to Amy’s place,_____ that she was away. 
#98755
A
only to discover
B
only discovering
C
only discovered
D
only having discovered
He will keep ________ new ideas so he can help farmers around China.
#96464
A
trying on
B
trying out
C
trying
D
both B and C