It has been laid down that each student must _____ a composition to the teacher once a week. 　　

查看本题答案

包含此试题的试卷

increases exceeds decreases reduces"

has been cut off 　 have been cut off 　 has been cut down 　 have been cut down

has been done; be cut down has done; cutting down has been done; being cut down had done; from being cut down

had laid off has been laid off has laid off had been laid off

lay lied been lying laid

has been raised has been risen has been fallen behind has been broken down

laying off, closed down laid off, closed down laid off, closing down being laid off, closing down

laying off, closed down laid off, closed down laid off, closing down being laid off, closing down

lay, lay lied, laid lay, laid laid, lay

has put has been put has been laid has been lying

has been pulled down　 had been pulled down is being pulled down　 have been pulled down

has been raised has been risen has been fallen behind has been broken down

laid out　　　　　 laid off　　　　　 laid aside　　　　　 laid down

laid out laid off laid aside laid down

is lying has laid has been lain has been lying

turn in give up put forward bring out

let out let alone let down let off

has been lying had been laying had been lying has laid

has been done;be cut down has done;cutting down has been done;being cut down had done;from being cut down