— It is around 100 years, known to us all, ______ the first modern Olympic Games was held.— It really is. But were _____ ?
I will never forget the day____ we spent in the old town with small houses.
In summer milk will quickly go bad_____ it is put into a fridge.
I am surprised that you should have been fooled by such a (an) ___ trick.
Email, as well as letters, ___________ an important part in daily communication..
The teacher suggests ____________ speaking English as often as possible .