1-your hair should……while cooking.
A- tie up
b- tied up
c- be tied up
d- being tied up
2-He............. to prison because he had committed several crimes.
a- sent
b- was sent
c- was sending
d- had been sent
The metal part of the knife.................... While preparing food.
a- mustn't be touched
c- must be touched
b- mustn't touch
d- must touch
4-The museum is protected
......... the government.
a- in
b-from
c- with
d- by
5-The kitchen floor ought to..
.......... at least once a week.
a- clean
b-be cleaned
c- cleaning
d- being cleaned