(2013·福建,22)________ basic first-aid techniques will help you respond quickly to emergencies.
#89233
A
Known
B
Having known
C
Knowing
D
Being known
推荐题目
 He could do nothing but _______for the bus _________.
#91883
A
wait, to come
B
wait; come
C
waiting; coming
D
waited; came
What worried the child most was _________ to visit his mother in the hospital.
#98684
A
his not allowing
B
his not being allowed
C
his being not allowed
D
having not been allowed