10. My sister washes the dishes after meals.  The dishes

${10.}$ The dishes are washed by my sister after meals.

→ bị động HTĐ: S + is/am/are (not) + v3/ed +(by+O) + time

${12.}$ Some presents are being carried by her.

→ bị động HTTD: S + is/am/are (not) + being + v3/ed +(by+O) + time

${13.}$ Some plants were being grown by his father at this time yesterday.

→ bị động QKTD: S +was/were (not) + being + v3/ed +(by+O) + time

${14.}$ Fiona was invited to John's birthday party by him last night. 

→ bị động QKĐ: S + was/were (not) + v3/ed +(by+O) + time

${15.}$  The dinner is being prepared in the kitchen by her mother.

→ bị động HTTD

${16.}$ Our teeth should be cleaned twice a day.

→ bị động động từ khiếm khuyết: S + can/should/shall/might/may/must .. (not) + be + v3/ed +(by+O) + time

${17.}$ The English grammar exercise was explained by our teachers yesterday.

→ bị động QKĐ

${18.}$ The accident was caused in this city by some drunk drivers.

→ bị động QKĐ

${19.}$ Tom's parents are visted him every week.

→ bị động HTĐ

${20.}$ The secretary is being phoned by the manager now.

→ bị động HTTD