________ is very important in doing any scientific work.
--- You look so upset , Jane . _____ ? ---- I have been told my father has got skin cancer .
_____ every word of his were true , what action would the teacher take ?
There are two rooms on the first floor, _____ is used as a guest room .
The treatment will continue until the patient reaches the point _____ he can walk steadily .
Spend your time just on the things you find _____ .