Next door to ours _________, who has just returned form abroad.

Is Doctor Green ________ ORBIS doctor—No， he is ________UNICEF volunteer. But he sometimes works with ORBIS.

So what is the procedure? — All the applicants ______ before a final decision is made by the authority

Look! How tall the tree is!— YesIt ______ nearly 20 metres[ ]

How long have you learned English—So far, we ________ English for more than six years.