We believe that an explosive device had been left inside a ___________.
A. contain
B. contained
C. contains
D. container
Store the peppercorns in an airtight ___________ and grind the pepper as you need it.
A. contained
B. contain
C. container
D. containers
There is always a strange ___________ of runners in the London Marathon.
A. collecting
B. collect
C. collection
D. collections
Your suit will be ready for _____________ on Tuesday.
A. collection
B. collections
C. collect
D. collects