—How can I use this washing machine?—Well, just refer to the _______.
The top student failed again in the examination and only then ______ the importance of reading and memorizing the English texts.
Please don’t get too close to the building______ roof is under repair.
It is a great ______ for us to be invited here to meet the great scientist face to face.
Tom has two cousins, and ______ are engineers.
The leader ordered that the boys ______ in the accident should be given first aid at once.