What ________ you ________ at this time yesterday

Ever since that political congress lastyear took many effective measures to develop economy, great changes of people’slife have .

______ is often the case in science, there is no simple answer

Eating too much fat can _______ heart disease and cause high blood pressure.Which of the following is not correct

ys, there is a ____ thatreceiving education is a waste of time.