根据句意或汉语提示补全句子。(20分)
(1)Twenty and twenty is ________.
(2)Seventy and seven is ________.
(3)I'm the ________(冠军).
(4)Ten big ________ (狮子) are at the zoo.
(5)I've got ________(98) points.
照例子,算一算。(20分)
例:Four and four is __eight__.
(1)Six and eight is ____________.
(2)Eight and nine is ____________.
(3)Five and five is ____________.
(4)Ten and ten is ____________.
(5)Nine and four is ____________.