What ______ the forest of Yangzhou in the last 30 years?—Yangzhou has become much greener.

Tom has made great progress. — _______, and _______.

This park is less______than that one.

Did Liu Xiang’s training programme _____ a lot of his time?—Yes, that’s right.

Simon has gone abroad to have ____________ European tour.— Oh, really? It must be ____________ unusual trip for him.