There was a huge bang as if someone had ___________ a rocket outside.。
A. explode
B. exploded
C. exploding
D. explodes
Bomb disposal experts ____________ the device under controlled conditions.
A. exploded
B. exploding
C. are exploded
D. are exploding
My dream is to _______ to a villa in France.
A. retire
B. retires
C. retired
D. retiring
The company's official _______ age is 65.
A. retire
B. retiring
C. retires
D. retired