Frank , with his two sisters , _____ London by train which _______ at 8:30 next morning .
After completing and signing it, please return the form to us in the envelope _______.
The book was written in 1946, _______ the education system has witnessed great changes.
He ______ be sitting at the gate, waiting for his lost son.
It is often recommended that children _______ chances to get close to nature.
If you _____ the bottle and cigarettes, you we’ll be much healthier.