He is having a party ____ celebration of his 84th birthday.
A. in B. on
C. of D. at
–Who told you about the result of the exam?
–The teacher _______.
A. in charge B. on charge
C. at charge D. in the charge
Old-fashioned phones matter when wireless networks break ____ in disasters.
A. out B. down
C. in D. up
When we saw the road _____ snow, we decide to spend the holiday at home.
A. blocking up B. blocked up
C. blocking with D. blocked with
Children under six are not ________ to school except those of extraordinary intelligence.
A. admitted B. permitted
C. accepted D. received
（题文）They __________ a certain amount of working experience through volunteer work.
A. accommodated B. accomplished
C. accumulated D. attempted
