To solve this problem, it is advisable _______ .
Form : It be + adj + that clause: thât là .... để ....
The pool should not be made so deep______small children can be safe there.
_______ has been a topic of continual geological research.
Regular exercise and good diet will bring______fitness and health.
The Lake District,____________________ was made a national park in 1951, attracts a large number of tourists every year.
There has been a great increase in retail sales,_____________________ ?
The examination was not very difficult, but it was_____________________ long.
It is stated in the passage that____________________ .
Stephanie: "Oh, no! I left my book at home. Can I share yours?" Scott: "______ "
We must push the piano to the corner of the hall to_____________________ our party tonight.
Long ago, women were_________to vote in political elections.