It is known yet whether they will come today形式主语有几种用法

It is known yet whether they will come today形式主语有几种用法 It is well-known But it is not yet known just how the placebo works to heal the body.它修饰的是known还是how或者是其它什么? it is well known that it is not finished yet it known to all还是it is known to all as is known,it is known不同用法? As is known 还是It is known英语 whet shape was it before?是什么意思 是as is known to...还是as iT known to... Who will be sent abroad_____not known yet.A.is B.are C.was D.were ( )he has gone is not known yet.A.the place B.where C.which D.what When to begin is not known yet.哪个是主语 哪个是谓语 The place he has gone is not known yet.这句话语法上有错吗? where he got the ticket is not known yet 是什么从句,从句是哪部分? 英语翻译However,it is not yet known how the adhesion and signaling of cells is coordinated by integrin clustering,integrin–integrin separation distances and integrin pattern geometries in cell membranes,nor how many integrins are necessarily in Hasn't he arrived yet?He is ( ) to be here at 8.Now it is 8:30.A.regarded B.supposed C.considered D.known这里为什么选择B, When and why he came here () yet?A is not known B are not known C has not known D have not been