You are required to memorize the English vocabulary that is a wide range from everyday English conversation to expertise.
To pass pre 1st grade test, it might be essential to change your way of studying English.
For me, as I had been learning English, I realized it necessary to devise my way to soak English up.
My former way is to just memorize, solve some questions and read. I won't assert you never improve your English by making use of it, but You can hardly speak English.
The reason is simple.
That is because that you have never spoken, used and expressed with your own words.
Maybe this way won't generate the thought process aimed at speaking and expressing English.
If this hypothesis is correct, it will be necessary to change wholly.
I try to adapt the way put stronger emphasis on expressing than solving and memorizing,
For instance, I changed the manner of looking up words whose meaning I didn't know.
I focused on how the words are used rather than the meanings of the words.