1 . It is highly recommended that the general public________one-metre social distance to avoid any possible risk of getting infected.

A．keep

B．will keep

C．must keep

D．keeps

2 . It is recommended that the project   ______ until all the preparations have been made.

A．is not started	B．will not be started
C．not be started	D．is not to be started

3 . It is required that in no case________ our password.

A．we should forget	B．should we forget
C．shall we forget	D．we shall forget