The disease, ________, could spread very fast

Let’s take a bus or taxi to the park — ______ you’d prefer to walk.

sted a lot of time playing football,otherwise he ________the exam

We should do what we have to do________ we can do whatwe want to do in the future.

ter when ther your job isimportant,you can contribute to social harmony that will, ______ ,benefit thereconstructioon effort in the quake – hit region