按要求完成下列各句。
likecooking.(改為否定句)
They__________________cooking.
dcanplaythepiano.(對劃線部分提問)
__________canDavid__________?
ethepigs.(改為一般疑問句)
__________________likethepigs?
hereanyducks?(作肯定回答)
Yes,___________________.
e’savaseonthedesk.(改為複數句)
There___________________vasesonthedesk.
