Some people have the idea_____ you can cross Canada in less than five days.
By the time you ____ in, I ____ two letters.
To ____ your dream of becoming a scientist, you must work hard from now on.
.I suggest ______10% of the bill for the waiter or waitress if a tip isn’t included.
There are _____advertisements which encourage ______to participate in improving their neighbourhood.
Some advertisements_______pictures or words of experts to show people how good the products are.