A:he said, asked
B:did he say, asked
C:he said, asking
D:did he say, asking
①大大小小的野兽吓得____。
②我们高兴得____。
③____一点儿____。
④____一下子____。
This book is yours.____ ____ that book?
下列计算正确的是( ).
下图所示实验操作正确的是( )