( ) Even the top students in our class can’t work out this problem. So it _____ be very difficult.
This is my grandpa._______ is a doctor. A.He B.She C.His
女孩 A.girl B.boy C.Ms.
十二 A.twelve B.eleven C.eight
猫 A.hat B.cat C.cap
请 A.thank B.point C.please