As the saying goes, practice makes perfect, ______is only by using English as often as possible can you learn English well.  

I wonder____ will become my daughter. As well as endless homework, she also bears other leading loads such as revision and recitation.

Several weeks had gone by____________I realized the painting was missing.

— What should I wear to attend his wedding party?— Dress _______ you like.

Leave your key with a neighbor _______ you lock your-self out one day.